Question

Qual a resposta ? 10x-2=4x²+2

Answer 1

Resposta:

x= 1/2 ou 2

Explicação passo-a-passo:

10x-2=4x²+2

10x-4x² = 2+2

-4x²+10x = 4

-4x² + 10x - 4 = 0

Δ = b² - 4.a.c

Δ = 10² - 4.(-4).(-4)

Δ = 100 - 64

Δ = 36

x = – b ± √∆/2a

x = -10 ± √36/2.(-4)

x = -10 ± 6/ -8

x1 = -10+6/-8 = -4/-8 = 1/2

x2 = -10-6/-8 = -16/-8 = 2