How do you factor x³-9?

(x² + 3)(x-3)

Step-by-step explanation:

Since the exponent is uneven you can take 2 and 1 and add them to the x's multiply to get 3 and since 9 is a perfect square you can square root it and get 3 which you put on both sides. Since the 9 is negative one of the symbols have to be negative, usually put in the second parenthesis.

Hope this helps!

step-by-step explanation:

de-gf

hj=3x+20

ji=15x-64

answer4 to the second power is 16

and 4 to the third power is 64,