Question

resolva
x^2 - 2x = 2x - 4

Answer 1

Resposta:

x² - 2x = 2x -4

x² - 4x + 4 = 0

Usando a fórmula de Báskara:

-(-4) ± $\sqrt{4^{2} - 4.1.4 }$  ÷ 2.1

= 4 ± 0 ÷ 2

= $\frac{4}{2}$

= 2