$\"\"$

The functions are $\"\"$ and $\"\"$ .

Find $\"\"$ .

Definition of composite function : $\"\"$ .

$\"\"$

$\"\"$ .

Since graph of $\"\"$ crosses the y-axis at $\"\"$ , the point is $\"\"$ .

$\"\"$

Apply square root on each side.

$\"\"$

The value of $\"\"$ is $\"\"$ .

$\"\"$

The value of $\"\"$ is $\"\"$ .