x^2+(5x-2)-(3[+1)=3x+x^2 решите уравнение

Question

x^2+(5x-2)-(3[+1)=3x+x^2 решите уравнение

Answer 1

X^2 + 5x - 2 - 3x - 1 = 3x + x^2
x^2 + 2x - 3 = 3x + x^2
x^2 + 2x - 3 - 3x - x^2 = 0 
x^2 - x^2 + 2x - 3x - 3 = 0 
- x - 3 = 0 
- x = 3 
x = - 3