Question

Resolver:


$3x {}^{2} - 45 = 30$
​

Answer 1

Respuesta:

x = ± 5

Explicación paso a paso:

3x² - 45 = 30

3x² = 30 + 45

3x² = 75

x² =  75/3

x² =  25

x  = √25

x = ± 5