SOLUTION: 4y^2-16y-128

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Question 305196: 4y^2-16y-128
Found 2 solutions by mananth, richwmiller:
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
4y^2-16y-128
(4y^2-4y-32)
4(y^2-8y+4y-32)
4{y(y-8)+4(y-8)}
4(y-8)(y+4)

Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
factor out 4
y^2-4y-32
find factors of -32 which add up to -4
-8 and 4
4*(y-8)*(y+4)