Question

4x elevado ao quadrado + 9x =0

Answer 1

X = -9/4
Tem q fazer bhaskara

Answer 2

$4 {x}^{2} + 9x = 0 \\ x(4x + 9) = 0 \\ x = 0 \\ 4x = - 9$

$x = - \frac{9}{4}$

$s=\left\{(0,-\frac{9}{4}) \right\}$