Which of the following expressions is equal to - x2 - 36?

A. (-x+6) (x-6)

B. (X+6) (x-6)

C. (-x-6) (x-6)

D. (-x-6) (x-6)

A

when you break the equation down, you want to make sure it still will have the same signs. so, if you have a - 2x then you r going to have one with a - x and one with a + x and to make the 36 negative you have to have one with a - 6 and one with a + 6