Question

$4x2 - 324 = 0$
me ajudeeeem gnt?​

Answer 1

$4 {x}^{2} - 324 = 0 \\ 4 {x}^{2} = 324 \\ {x}^{2} = \frac{324}{4} \\ {x}^{2} = 81 \\ x = \sqrt{81} \\ x = 9$

Resposta final: x = 9