Question

2x ao quadrado -8x+8=0

Answer 1

2x ao quadrado -8x+8=0
 
4x-8x=-8
-4x=-8.(-1)
4x=8
x=8/4
x=2

Answer 2

a=2
b=-8
c=8

delta=b²-4.a.c

delta=-8²-4.2.8
delta=64-64
delta=0

x=-8±√0/2.2
x=-8±0/4= -8/4 =-2

s={-2}