Question

quantas raizes tem a equaçao 4x²-4x+2=0?

Answer 1

4x²-4x+2=0
a=4 b=-4 c=2
∆=b²-4.a.c
∆=(-4)²-4.4.2
∆=16-32
∆=16
x=-b±√∆ / 2.a
x=-(-4)±√4 / 2.4
x=+4+4 / 8 = 8/8
x'=1

x=+4-4 / 8 = 0/8
x"=0