Question

Решите уравнение
(x+10)2=(5-x)2

Answer 1

2x+20=10-2x
4x=10-20
4x=-10
x=-10/4
x=2,5

Answer 2

* -2,5

Answer 3

х2+20х+100=25-10х+х2
х2-х2+20х+10х+100-25=0
30х+75=0
15(2х+5)=0
2х+5=0
2х=-5|:2
х=-2,5