Question

X^2-81
Factor the quadratic completely

Answer 1

(x+9)(x-9)

Explanation:

whenever its is x^2

you can start off with

(x+_)(x+_)

then your figure out "what times what" is -81 (they have to be the same number!)

Its -9 and 9

and so you plug that in to get

(x+9)(x-9)

Answer 2

x ^2 − 9^ 2. hope this helps