Question

If g(x) = x2 – 4, find g(5). 6 О 14 21 O 29

Answer 1

$\tt \: g(x) = {x}^{2} - 4$

Substitute the value of x as 5 (given) in the above equation. The equation changes too..

$\tt \: g(5) = {5}^{2} - 4$

Now you can easily solve the equation.

$\tt \: g(5) = {5}^{2} - 4 \\\tt g(5) =( 5 \times 5) - 4 \\ \tt \: g(5) = 25 - 4 \\ \tt \: g(5) = 21$

Answer - $\boxed{\sf{21}}$

Answer 2

$\boxed{ \sf{Answer}}$

$\sf \: g(x) = {x}^{2} - 4 \\ \\ \sf \: x = 5 \\ \\ \sf \: g(5) = {5}^{2} - 4 \\ \sf \: g(5) = 25 - 4 \\ \sf \: g(5) =\underline 2\underline1$

Answer ↦21 [Option C]