1. ## Factor Polynomial

x2y - 16y + 32 - 2x2

what i came up with so far is

y(x2 - 16) + 32 - 2x2
y(x + 4)(x - 4) + 32 - 2x2

2. ## Re: Factor Polynomial

Originally Posted by PaperStSoap
x2y - 16y + 32 - 2x2

what i came up with so far is

y(x2 - 16) + 32 - 2x2
y(x + 4)(x - 4) + 32 - 2x2

\displaystyle \begin{align*} x^2y - 16y + 32 - 2x^2 &= x^2y - 2x^2 - 16y + 32 \\ &= x^2\left(y - 2\right) - 16\left(y - 2\right) \\ &= \left(y - 2\right)\left(x^2 - 16\right) \\ &= \left(y - 2\right)\left(x - 4\right)\left(x + 4\right) \end{align*}

3. ## Re: Factor Polynomial

32 + 2x^2 = -2(-16 + x^2) = -2(x^2 - 16) = -2(x + 4)(x - 4)

(y-2)(x+4)(x-4)

is this right?

4. ## Re: Factor Polynomial

Originally Posted by PaperStSoap
32 + 2x^2 = -2(-16 + x^2) = -2(x^2 - 16) = -2(x + 4)(x - 4)

(y-2)(x+4)(x-4)

is this right?
Didn't you read the post directly above this one?

5. ## Re: Factor Polynomial

i was actually typing that response before yours came up.