SOLUTION: I CANT'T FACTOR!! Factor: x^3 + 3x^2 - 28x Factor: y^2 + 0.4y + 0.04 Factor: y^2 + 6y + 8y + 48

Algebra ->  Algebra  -> Polynomials-and-rational-expressions -> SOLUTION: I CANT'T FACTOR!! Factor: x^3 + 3x^2 - 28x Factor: y^2 + 0.4y + 0.04 Factor: y^2 + 6y + 8y + 48       Log On

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Question 276937: I CANT'T FACTOR!!
Factor:
x^3 + 3x^2 - 28x
Factor:
y^2 + 0.4y + 0.04
Factor:
y^2 + 6y + 8y + 48

Answer by unlockmath(1614) About Me  (Show Source):
You can put this solution on YOUR website!
Hello,
I'll help you with the first one: x^3 + 3x^2 - 28x
First we want to pull out an x like this:
x(x^2 + 3x - 28) Now we can factor it li to get:
x(x+7)(x-4)
There we go. Make sense?
RJ
www.math-unlock.com