Question

Qual a resolução? 3x²-4=23

Answer 1

$3x^{2} = 23 + 4$
$x^{2} = \frac{27}{3}$
$x = \sqrt{9}$
$x =$ ± 3

Answer 2

$3x^{2}$ - 4 = 23
$3x^{2}$ = 23 + 4
$3x^{2}$ = 27
$x^{2}$ = $\frac{27}{3}$
$x^{2}$ = 9
x = ± $\sqrt{9}$
x = 3