Помогите!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Question

Помогите!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

(x+1)²+(x-6)²=2x²
(x+1)(x+1)+(x-6)(x-6)=2x²
x²+2x+1+(x²-12x+36)=2x²
x²+2x+1+x²-12x+36-2x²=0
-10x+36=0
-10x=-36
x=36/10=3.6