Question

2x²-90=8

Me ajudemmmmmmmmm

Answer 1

Ok!

2x² - 90 = 8

2x² = 8 + 90

2x² = 98

x² = 98/2

x² = 49

x = +- √49

x= +-7



RESPOSTA --> 7 e - 7

Answer 2

2$x^{2}$ = 90+8
2$x^{2}$ = 98
$x^{2} = \frac{98}{2}$
$x^{2}$ = 49
$x = +-\sqrt{49}$
x = +-7