Question

descompuneti in factori
$x^{4}$-81=

Answer 1

(x^2-9)(x^2+9)=(x-3)(x+3)(X^2+9) O seara buna!

Answer 2

(X la puterea2-9)( x lla puterea2+9)=(x-3)(x+3)(x la putetra2+9)