Question

Alguém (x+3)(x-3)+1 ???

Answer 1

X^2-9+1-> x^2-8-> x^2=8 -> x=raiz quadrada de 8

Answer 2

(x + 3) . (x - 3) + 1
x² - 3x + 3x - 9 + 1
x² - 8 = 0
x² = 8
x = ± √8
x = ± √2³
x = ± √2² . 2
x = ± 2√2