Question

Factor Completely.
x^4-81

Answer 1

(x^2+9)(x+3)(x-3) or the 3rd bubble (2nd to last).

Explanation:

a2−b2=(a+b)(a−b)a2-b2=(a+b)(a-b) where a=x2a=x2 and b=9b=9.

(x2+9)(x+3)(x−3)

Answer 2

(x^4+9)(x+3)(x-3) ; I hope this helps!!