Question

f (x)= x ao quadrado - 6x + 8= 0

Answer 1

x² - 6x + 8= 0

a:1

b:-6

c:8

Δ = b2 – 4ac

Δ = -6²-4.1.8

Δ = 36 - 32

Δ =5

x = – b ± √Δ/ 2.a

x= -(-6)  ± √5/2

x=6 ± 5/2

x1=6+5/2

x1=11/2

x2=6-5/2

x2=1/2