Question

b) 3x = x(7+3x) prfvr me ajude​

Answer 1

$3x = x(7 + 3x)$

$3x = 7x + 3x {}^{2}$

$3x - 7x - 3x {}^{2} = 0$

$- 4x - 3x {}^{2} = 0$

$x \times (4 + 3x) = 0$

X=0

4+3X=0

X=0

$x = - \frac{4}{3}$