Question

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

Answer 1

x^2-5x+5=-x^2-x+3+2x^2
x^2-5x+5+x^2+x-3-2x^2=0
-4x+2=0/-1
4x-2=0
4x=2
x=0,5 или 1/2