Question

Решите уравнение: (x+11)^2-x^2=11

Answer 1

(x+11)^2-x²=11
х²+22х+121-х²=11
22х=-110
х=-110:22
х=-5

Answer 2

-х2+(х+11)2=11
121+х2+22х-х2=11
110+22х=0
х=-110:22
х=-5