Question

x² - 3x = 0 help again​

Answer 1

Resposta:

S = {0, 3}

Explicação passo-a-passo:

$x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$

a = 1

b = -3

c = 0

$x=\frac{-(-3)\pm \sqrt{(-3)^2-4\cdot 1\cdot 0}}{2\cdot 1} = \frac{3\pm\sqrt{9}}{2}\\ \\x_1=\frac{3+3}{2}=6/2=3\\x_2=\frac{3-3}{2}=0$