Question

Usando a formula de bhaskara -5(-2x+3)-3xao quadrado=1-2xao quadrado

Answer 1

-5 (-2x + 3) - 3x² = 1 - 2x²

10x - 15 - 3x² - 1 + 2x² = 0

x² - 10x + 16 = 0

Δ = b² - 4 ac

Δ = (-10)² - 4 . 1 . 16

Δ = 100 - 64

Δ = 36

x = - b + - √Δ / 2a

x = 10 + - 6 / 2

x' = 10 + 6 / 2 = 8

x" = 10 - 6 / 2 = 2