$\"\"$

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

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Find $\"\"$ .

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

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$\"\"$

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$\"\"$

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$\"\"$ .

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

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$\"\"$

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$\"\"$

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Apply square root on each side.

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$\"\"$

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$\"\"$

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

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$\"\"$

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