Question

x²-3x+2=0 por complemento de quadrado

Answer 1

x²-3x+2=0

∆=b²-4.a.c
∆=(-3)²-4.1.2
∆=9-8
∆=1

x=-b±√∆/2.a
x=-(-3)±√1/2.1
x=3±1/2
x¹=3+1/2=4/2=2
x²=3-1/2=2/2=1