anonymous
  • anonymous
multiply. x-5/4x-8 times (12x^2+32x+16)
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
|dw:1433126245822:dw|
Nnesha
  • Nnesha
factor that quadratic equation :-)
Nnesha
  • Nnesha
do you now how to factor quadratic equations ?

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anonymous
  • anonymous
not really, i know that you know how to break it up though..
Nnesha
  • Nnesha
first of all find GCF( greatest common factor ) \[\huge\rm 12x^2 +32x +16\]
anonymous
  • anonymous
4?
Nnesha
  • Nnesha
yep right take it out \[4( ???)\] what should be in the parentheses
anonymous
  • anonymous
what do i put in the parentheses?.. do i divide them all by 4?
anonymous
  • anonymous
im sorry im horrible at math..
Nnesha
  • Nnesha
yep! that's right
Nnesha
  • Nnesha
nah u r fine! :-)
anonymous
  • anonymous
okay... so i got (3*4) for 12 (2*2*2*2*2) 2x^5 for 32.. and (2*2*2*2)) 2x^4 for 16.. is that right?
Nnesha
  • Nnesha
you can do like this \[\huge\rm \frac{12x^2 }{4} +\frac{32x}{4} +\frac{16}{4}\] 4( ) write your answer
anonymous
  • anonymous
okay, and we use 4 because its the gcf?... so i got 3x^2+8x+4
Nnesha
  • Nnesha
yep right now find two number if you multiply them you should get product of AC and if you add or subtract them you should get middle term which is 8 |dw:1433127528801:dw|
anonymous
  • anonymous
oh okay
anonymous
  • anonymous
so these are my answer choices.. - (3x+2)/4(x-5) -(x-5)(3x+2)/4 -(x+5)(3x+2) -(x-5)(12x+8)
anonymous
  • anonymous
i think its gonna be the first one?..
Nnesha
  • Nnesha
what are factors of 3x^2 +8x +4 ?
anonymous
  • anonymous
im not sure.. i know i can still factor 8x and 4 by 4 or 2 but idk for 3x^2...
Nnesha
  • Nnesha
what is a= and c in that equation |dw:1433128106396:dw|
anonymous
  • anonymous
a= 3x^2 and c is 4 right?
rissyroo118
  • rissyroo118
x-5/4x-8 x- 5/4x-8m= -1/4x-8
anonymous
  • anonymous
im done with this question lol.. but that wasnt one of the answer choices.. but ugh im just gonna guess
rissyroo118
  • rissyroo118
x-5/4x-8*(12x^2+32x+16) = -1/4x-8x
rissyroo118
  • rissyroo118
(12x^2+32x+16)=-1/4x-(8x12^2=8x32x+8*16)
rissyroo118
  • rissyroo118
=-1/4x-(96x^2+256x+128)=-96x^2-2561/4x-128
anonymous
  • anonymous
okay, thanks! you needed help with your bio right?
anonymous
  • anonymous
biology is my thing, not algebra D:
Nnesha
  • Nnesha
sorry i lost net connection yesterday :D sorry :( so
Nnesha
  • Nnesha
sorry i lost net connection yesterday :D sorry :( let me konw if you still need help :-)
anonymous
  • anonymous
haha thanks but i figured it out :)
Nnesha
  • Nnesha
alright

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