Question

(х-2)²+(х+2)²-2(х-2)²=16​

Answer 1

Ответ:

x²-4x+4+x²+4x+4-2(x²-4x+4)=16

2x²+8-2x²+8x-8=16

8x=16

x=2

Answer 2

Ответ:

$\underline{(x-2)^2}+(x+2)^2\underline {-2(x-2)^2}=16\\\\(x+2)^2-(x-2)^2=16\\\\x^2+4x+4-(x^2-4x+4)=16\\\\8x=16\\\\x=2$