Question

Quais sao as raizes da funcao f(x)=x elevado a 2-16

Answer 1

x² - 16 = 0
x² = 16
x = +/- √16
x = +/- 4

Answer 2

 f(x)= x^2 - 16

x^2 - 16 = 0

x = +/- √16

x = +/- 4