\"\"

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

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Find \"\".

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\"\"                       (Composition of functions formula)

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\"\"               (Substitute \"\")

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\"\"                       (Substitute again)

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\"\"                          (Distributive property: \"\")

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\"\"                                (Simplify)

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\"\".

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\"\"

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Find \"\".

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\"\"             (Composition of functions formula)

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\"\"              (Substitute \"\")

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\"\"                       (Substitute again)

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Difference of cubes: \"\".

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\"\"

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\"\"  (Distributive property: \"\")

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\"\"        (Simplify)

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\"\".

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\"\"

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\"\" and \"\".