(X+80)^2=(X+3)^2 Поподробней

Question

(X+80)^2=(X+3)^2
Поподробней

Answer 1

(x+80)²=(x+3)²
x²+160x+6400=x²+6x+9
160x-6x=9-6400
154x=-6391
x=-6391/154
x=-41.5