Question

x (2x-x) = 5x - 6
me ajudem

Answer 1

x(2x-x) = 5x - 6
2x² - x² - 5x + 6 = 0
x² - 5x + 6 = 0
x = $\frac{-b +/- \sqrt{ b^{2} - 4ac}}{2a}$
x = $\frac{5 +/- \sqrt{ 5^{2} - 4.6}}{2}$
x = $\frac{5 +/- \sqrt{25 - 24}}{2}$
x = $\frac{5 +/- \sqrt{1}}{2}$
x = $\frac{5 +/- 1}{2}$

x' = $\frac{5 +1}{2}$
x'= 3

x'' = $\frac{5 -1}{2}$
x'' = 2

o valor de x pode ser 3 ou 2.