Question

x( x + 4) = 1/3 + 4x.

Answer 1

Resposta:

0,577

Explicação passo-a-passo:

x.(x+4)=1/3+4x

x.4x=1/3+4x

4x²-4x=1/3

x²=1/3

x=√1/3

x=0,577

Answer 2

Oie, Td Bom?!

$x \: . \: (x + 4) = \frac{1}{3} + 4x \\ x {}^{2} + 4x = \frac{1}{3} + 4x \\ x {}^{2} = \frac{1}{3} \\ x = ± \sqrt{ \frac{1}{3} } \\ x = ± \frac{ \sqrt{3} }{3}$

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

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

Att. Makaveli1996