Question

x ao quadrado -2x +2=

Answer 1

x²-2x+2x=0
a=1 b=-2 c=2

∆=(-2)²-4.1.2
∆=4-8
∆=4

x=-(-2)±√4
2.1

x=2±2
2

x¹=2+2=4=2
2. 2

x²=2-2=0=0
2. 2