.:HSTuners::

*pdiggitydogg* · 01-20-2005, 12:23 PM

So help me out...

I have these polynomials:
(8y^2-14y-15) (3y^2-7y-6)
------------------ *-------------
(6y^2-11y-10) (4y^2-9y-9)

Factored:
(-2y+5)(-4y-3) (-3y-2)(-y+3)
------------------*---------------
(3y+2)(2y-5) (4y+3)(y-3)

Now...I need to simplify it down.
So my question is:
Can I cancel out the (3y+2) and the (-3y-2) since the "-" changes the signs? Same for the other ones that change signs?
If that's right...doesnt everything cancel out???

V8killimports · 01-20-2005, 12:41 PM

Is the answer a vegetable?

*pdiggitydogg* · 01-20-2005, 12:46 PM

No, a kangaroo

01-20-2005, 01:34 PM

i wish i remembered how to do this stuff cuz im bored @ work and i would love to help... gimme a min and ill see what i can do...

Racing Rice · 01-20-2005, 02:09 PM

WTF... its 23.

Okay, its not really... Its harder then 4x4-6, I ain't gettin it.

*pdiggitydogg* · 01-20-2005, 02:19 PM

No no, it doesnt equal anything.
I just need to simplify it to basic components.

GT40FIED · 01-20-2005, 04:38 PM

Seriously...when the fuck in real life would you use something like that? I hate college.

01-20-2005, 04:53 PM

Quote:

Originally posted by pdiggitydogg
So help me out...

I have these polynomials:
(8y^2-14y-15) (3y^2-7y-6)
------------------ *-------------
(6y^2-11y-10) (4y^2-9y-9)

Factored:
(-2y+5)(-4y-3) (-3y-2)(-y+3)
------------------*---------------
(3y+2)(2y-5) (4y+3)(y-3)

Now...I need to simplify it down.
So my question is:
Can I cancel out the (3y+2) and the (-3y-2) since the "-" changes the signs? Same for the other ones that change signs?
If that's right...doesnt everything cancel out???

factor -1 out of (-3y-2) and you get (3y+2)

it cancels that out then you can do the same for all of them and it'd factor to 1 i believe....

ebpda9 · 01-20-2005, 04:55 PM

yeah, the answer is 1

*pdiggitydogg* · 01-20-2005, 05:02 PM

since all cancel?

ebpda9 · 01-20-2005, 06:20 PM

Wren57 · 01-20-2005, 08:25 PM

I believe the answer would be -1... ?

01-20-2005, 11:45 PM

Quote:

Originally posted by highlander
I believe the answer would be -1... ?

pretty sure everything cancels out to 1

Racing Rice · 01-21-2005, 09:24 AM

Quote:

Originally posted by GT40FIED
Seriously...when the fuck in real life would you use something like that? I hate college.

I know that I've been out of school for nearly 9 years, and I've never needed to know that.:o

*ChrisCantSkate* · 01-21-2005, 10:05 AM

Quote:

Originally posted by eXNBP
pretty sure everything cancels out to 1

yeah you end up with (-1)(-1)*(-1)(-1) which equals 1

ShEaNy · 01-21-2005, 11:34 AM

yea i think there right..its 1...

ebpda9 · 01-21-2005, 11:42 AM

that was easy. i don't get the factoring part.

*pdiggitydogg* · 01-21-2005, 12:37 PM

Factoring is a bitch.
Tell me ONE person that actually does factoring in real life (other than math teachers and mathmaticians)

MissJDM · 01-22-2005, 02:55 AM

I agree with it being 1 and I verified it twice.
If you make the leading terms positives by taking +1 out of each of those negatives:
(-1)(2y-5)(-1)(4y+3)(-1)(3y+2)(-1)(y-3)
----------------------------------------------
(3y+2)(2y-5)(4y+3)(y-3)

Remove common terms:
(-1)(-1)(-1)(-1) = 1

Then if you check the answer with y=0

(8y^2-14y-15) (3y^2-7y-6)
------------------ * ----------------
(6y^2-11y-10) (4y^2-9y-9)

(-15) (-6) 90
------ * ------- = ---- = 1
(-10) (-9) 90

Double check it with y=1
(8y^2-14y-15) (3y^2-7y-6)
------------------ * ----------------
(6y^2-11y-10) (4y^2-9y-9)

(8-14-15) (3-7-6)
------------ * -----------
(6-11-10) (4-9-9)

(-21) (-10) 210
------ * ------- = ------ = 1
(-15) (-14) 210

I know my answer is a tad late, I haven't been getting to all of the boards lately. If you have other questions, feel send it my way.

*pdiggitydogg* · 01-22-2005, 10:50 PM

Oh there will probably be more later on...I suck at math and I have so much to do...

Oh yeah, and thanks for the help...it is 1

FlooredAccord · 01-25-2005, 02:35 PM

You guys are way too s-m-r-t, I mean s-m-a-r-t for me!

01-20-2005, 12:23 PM	#1
pdiggitydogg Yahoo Watashi wa kattaze! Join Date: May 2002 Location: Meanwhile, up in The D... Age: 41 Posts: 10,579	*God I fckin hate math** So help me out... I have these polynomials: (8y^2-14y-15) (3y^2-7y-6) ------------------ ------------- (6y^2-11y-10) (4y^2-9y-9) Factored: (-2y+5)(-4y-3) (-3y-2)(-y+3) --------------------------------- (3y+2)(2y-5) (4y+3)(y-3) Now...I need to simplify it down. So my question is: Can I cancel out the (3y+2) and the (-3y-2) since the "-" changes the signs? Same for the other ones that change signs? If that's right...doesnt everything cancel out???

01-20-2005, 02:09 PM	#5
Racing Rice Project Combat Honda Join Date: Sep 2001 Location: Highland,OH Age: 45 Posts: 7,985	WTF... its 23. Okay, its not really... Its harder then 4x4-6, I ain't gettin it. __________________ Racing Rice

01-20-2005, 04:38 PM	#7
GT40FIED Best...mod...ever Join Date: Sep 2001 Location: At the end of the longest line Age: 43 Posts: 7,451	Seriously...when the fuck in real life would you use something like that? I hate college. __________________ 1984 1/2 Mustang GT350 #842, Faster than you...nuff said Anna Fan Club President/Dictator Someday, in the event that mankind actually figures out what it is that this world actually revoles around, thousands of people are going to be shocked and perplexed that it was not them. Sometimes this includes me. "If you want a vision of the future, imagine a boot stamping on a human face - forever." - George Orwell Welcome to the new Amerika

01-20-2005, 04:55 PM	#9
ebpda9 Repost Wagon Join Date: Dec 2001 Location: over here Age: 44 Posts: 17,266	yeah, the answer is 1 __________________

01-20-2005, 06:20 PM	#11
ebpda9 Repost Wagon Join Date: Dec 2001 Location: over here Age: 44 Posts: 17,266	yup __________________

01-20-2005, 12:41 PM	#2
V8killimports Registered User Join Date: Sep 2002 Location: Beale AFB, CA Posts: 1,377	Is the answer a vegetable?

01-20-2005, 12:46 PM	#3
pdiggitydogg Yahoo Watashi wa kattaze! Join Date: May 2002 Location: Meanwhile, up in The D... Age: 41 Posts: 10,579	No, a kangaroo

01-20-2005, 01:34 PM	#4
link Posts: n/a	i wish i remembered how to do this stuff cuz im bored @ work and i would love to help... gimme a min and ill see what i can do...

01-20-2005, 02:19 PM	#6
pdiggitydogg Yahoo Watashi wa kattaze! Join Date: May 2002 Location: Meanwhile, up in The D... Age: 41 Posts: 10,579	No no, it doesnt equal anything. I just need to simplify it to basic components.

01-20-2005, 05:02 PM	#10
pdiggitydogg Yahoo Watashi wa kattaze! Join Date: May 2002 Location: Meanwhile, up in The D... Age: 41 Posts: 10,579	since all cancel?

01-20-2005, 08:25 PM	#12
Wren57 Registered User Join Date: Feb 2002 Age: 39 Posts: 2,856	I believe the answer would be -1... ? __________________ yeah, its that big

01-21-2005, 11:34 AM	#16
ShEaNy Registered User Join Date: Apr 2002 Location: Winnipeg, MB Age: 40 Posts: 3,821	yea i think there right..its 1...

01-21-2005, 11:42 AM	#17
ebpda9 Repost Wagon Join Date: Dec 2001 Location: over here Age: 44 Posts: 17,266	that was easy. i don't get the factoring part. __________________

01-21-2005, 12:37 PM	#18
pdiggitydogg Yahoo Watashi wa kattaze! Join Date: May 2002 Location: Meanwhile, up in The D... Age: 41 Posts: 10,579	Factoring is a bitch. Tell me ONE person that actually does factoring in real life (other than math teachers and mathmaticians)

01-22-2005, 02:55 AM	#19
MissJDM Registered User Join Date: Aug 2004 Location: West Coast Age: 38 Posts: 2,244	I agree with it being 1 and I verified it twice. If you make the leading terms positives by taking +1 out of each of those negatives: (-1)(2y-5)(-1)(4y+3)(-1)(3y+2)(-1)(y-3) ---------------------------------------------- (3y+2)(2y-5)(4y+3)(y-3) Remove common terms: (-1)(-1)(-1)(-1) = 1 Then if you check the answer with y=0 (8y^2-14y-15) (3y^2-7y-6) ------------------ * ---------------- (6y^2-11y-10) (4y^2-9y-9) (-15) (-6) 90 ------ * ------- = ---- = 1 (-10) (-9) 90 Double check it with y=1 (8y^2-14y-15) (3y^2-7y-6) ------------------ * ---------------- (6y^2-11y-10) (4y^2-9y-9) (8-14-15) (3-7-6) ------------ * ----------- (6-11-10) (4-9-9) (-21) (-10) 210 ------ * ------- = ------ = 1 (-15) (-14) 210 I know my answer is a tad late, I haven't been getting to all of the boards lately. If you have other questions, feel send it my way. __________________ you say it best when you say nothing at all

01-22-2005, 10:50 PM	#20
pdiggitydogg Yahoo Watashi wa kattaze! Join Date: May 2002 Location: Meanwhile, up in The D... Age: 41 Posts: 10,579	Oh there will probably be more later on...I suck at math and I have so much to do... Oh yeah, and thanks for the help...it is 1

01-25-2005, 02:35 PM	#21
FlooredAccord 2nd Gear Join Date: Jul 2004 Location: Concord, CA Age: 42 Posts: 206	You guys are way too s-m-r-t, I mean s-m-a-r-t for me! __________________ Here's to alcohol: The source of, and answer to, all of life's problems. -Homer Simpson What are you gonna do? Sick your dogs on me? Or your bees? Or dogs with bees in their mouth so when they bark they shoot bees at me? -Homer Simpson

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