Question

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

Answer 1

Х²-5х+5=-х²-х+3+2х²
-5х+х=-5+3
-4х=-2
х=1/2=0,5

Answer 2

$x^{2} -5x+5=-x^2-x-(-3-2 x^{2} ) \\ x^{2} -5x+5=- x^{2} -x+3+2 x^{2} \\ x^{2} -5x+5= x^{2} -x+3 \\ -5x+5=3-x \\ -5x+x=-2 \\ -4x=-2 \\ \\ x=0.5$