Question

Quimera que faz essa conta ( x - 7 ) guadrado =0

Answer 1

$(x-7)^{2}=0$
$x^{2}$$- 7^{2}$=0
$x^{2}$+49=0
$x^{2}$=-49
x=+ou-7

Answer 2

(x-7)^2 =0
x^2 - 7^2 =0
x (x-7)=0
x=0
x-7=0
x=7