Question

решите уравнение (х+10)²=(2-х)²

Answer 1

(x+10)^2=(2-x)^2
x^2+20x+100-4+4x-x^2=0
20x+4x=-100+4
24x=-96
x=-4

Answer 2

(х+10)²=(2-х)²
х²+20х+100=4-4х+х²
х²+20х+100-4+4х-х²=0
24х+96=0
24х=-96
Х= -4