Question

x alguadrado menos 6x + 8​

Answer 1

x²-6x+8=0

Δ=b²-4ac

Δ=(-6)²-4.1.8

Δ=36-32

Δ=4

x=-b+-√Δ/2a

x=6+-2/2

x'=6+2/2=8/2=4

x"=6-2/2=4/2=2

s={4, 2}