Question

Como resolver?

f (x) = √ 2x - 16

Answer 1

f(x) = √2x 16
Tome 2x - 16 > 0
2x > 16
x  > 16/2
x > 8
P/ x  = 9
f(9) = √2.9 - 16
f(9) = √18 - 16
f(9) = √2

Answer 2

Oie, Td Bom?!

$f(x) = \sqrt{2x - 16}$

$0 = \sqrt{2x - 16}$

$\sqrt{2x - 16} = 0$

$2x - 16 = 0$

$2x = 16$

$x = \frac{16}{2}$

$x = 8$

Att. Makaveli1996