Question

корень уравнения
(x+2)^2=(x-8)^2

Answer 1

(x+2)^2=(x-8)^2

(x+2)*(x+2)=(x-8)*(x-8)

x^2+4x+4=x^2-16x+64

x^2+4x-x^2+16x=-4+64

20x=60

x=60/20

x=3