Question

(3m + 1) elevado a 2 = 2(3m + 2)

Answer 1

Oie, Td Bom?!

$(3m + 1) {}^{2} = 2(3m + 2) \\ 9m {}^{2} + 6m + 1 = 6m + 4 \\ 9m {}^{2} + 1 = 4 \\ 9m {}^{2} = 4 - 1 \\ 9m {}^{2} = 3 \\ m {}^{2} = \frac{1}{3} \\ m = ± \sqrt{ \frac{1}{ 3} } \\ m = ± \frac{ \sqrt{3} }{3}$

$m = - \frac{ \sqrt{3} }{3} \\ m = \frac{ \sqrt{3} }{3}$

S = $\left \{ x_{1} = - \frac{ \sqrt{3} }{3} \: , \: x_{2} = \frac{ \sqrt{3} }{3} \right \}$

Att. Makaveli1996