Question

x elevado a 2 -6x+8=0

Answer 1

Δ=b²-4·a·c
Δ=6²-4·1·8
Δ=36-32
Δ=4

x=-b+-√Δ/2.a
x=+6+-√4/2·1

x₁=6+2/2
x₁=8/2
x₁=4

x₂=6-2/2
x₂=4/2
x₂=2