Question

Y=x^2-6×+8 me ajudem

Answer 1

Y=x²-6×+8

a=1 b=-6 c=8

Δ=b²-4ac

Δ=(-6)²-4( 1 )(8)

Δ=36-32

Δ=4

x=-b+ou-√Δ÷2a

x=6+ou-√4/2.1

x=6+ou-2/2

x1=6+2/2 => 8/2=4

x2=6-2/2 => 4/2=2