Question

calcule o valor de 2x^2-5x=-2​

Answer 1

2x² - 5x= - 2

2x² - 5x + 2 = 0

2x - x - 4x + 2 = 0

x * (2x - 1) - 2(2x - 1) = 0

(2x - 1) * (x - 2) = 0

2x - 1 = 0

x - 2 = 0

Solução final:

x1 = 1/2

x2 = 2