Question

Помогите решить уравнение)
Х^2=16

Answer 1

$1; ; x^2=16\\x^2-16=0\\(x-4)(x+4)=0\\x_1=-4,; ; x_2=4\\\2.; ; ; x^2=16\\x=pm sqrt{16}\\x=pm 4$

Answer 2

x^2=16;     x=±4...................................................