Question

(x+2)^2+(2x-1)^2=(x+2)^2

Answer 1

(x+2)²+(2x-1)²=(x+2)²
х²+4х+4+(4х²-4х+1)=х²+4х+4
х²+4х+4+4х²-4х+1-х²-4х-4=0
4х²-4х+1=0
4х²-4х+1=(2х-1)²

Answer 2

( Х + 2 )^2 + ( 2х - 1 )^2 = ( Х + 2 )^2
( Х + 2 )^2 - ( Х + 2 )^2 + ( 2х - 1 )^2 = 0
2х - 1 = 0
Х = 0,5
Ответ 0,5