Question

x²-6x+8=0 como resolver?

Answer 1

Δ =b²-4.a.c

Δ =(-6)²-4.1.8

Δ =36-32

Δ =4

x=-b+-√ Δ /2.a
x=-(-6)+-√4/2.1
x=+6+-2/2
x=+6+2/2=8/2=4
x= +6-2/2=4/2=2