Question

Решите уравнение ))))))))(

Answer 1

$2*x^2-2*x^2+5*x-4*x+2=5$
x+2=5
x=3

Answer 2

2 x^2-(2x^2-5x)-(4x-2)=5
2x^2-2x^2+5x-4x+2=5
x=5-2
x=3