Question

a)x2-64=
b)-3x2+27=
c)2x2-162=​

Answer 1

Resposta:

a) x² - 64 = 0

x² = 64

x = √64

x = ±8

b) -3x² + 27 = 0

-3x² = -27 . (-1)

3x² = 27

x² = 27/3

x = √9

x = ±3

c) 2x² - 162 = 0

2x² = 162

x² = 162/2

x² = 81

x = √81

x = ±9

Bons estudos!