15․05․23

ա․x² — 1 = 0
x² = +,- 1

բ. x²=0 , x = 0

գ.x = 0 , x = 1

դ. x = -3 , x = 0

ե. x =3 , x =-2

զ . x = -5 , x = 7

է. x = 0 , x = 0.5

ը. x = 0 x =-2

թ․x = 8 , x = -5

ժ․ x = -1 , x = 4