Question

Alguém resolve pra mim pfv 4x2 – 4x – 24 = 0

Answer 1

Resposta:4x²-4x-24=0

a= 4; b= -4; c= -24

Δ=b²-4ac

Δ=(-4)² - 4.4.(-24)

Δ=400

x= -b +/-√Δ/2a

x= -(-4)+/-√400/2.4

x= 4 +/- 20/8

x'= 4+20/8

x'=3

x''=4-20/8

x''=-2

Xv=-b/2a

Xv=-(-4)/2.4

Xv=4/8

Xv=0,50

Yv= -Δ/4a

Yv=-400/4.4

Yv=-25

Y=C

Y= -24

Explicação passo-a-passo: