Question

$- 3 { \times }^{2} + 75$
resolva a equação ​

Answer 1

Resposta: X=5

Explicação passo-a-passo:

$-3x^{2} +75=0\\\\-3x^{2} =-75 (-1)\\\\3x^{2} =75\\\\x^{2} =\frac{75}{3} \\\\x^{2} =25\\\\x=\sqrt{25} \\\\x=5$