\"\"

\

Original function is \"\".

\

Replace x = 3 in original function.

\

\"\"

\

Evaluate powers: \"\".

\

\"\"

\

\"\"        (Multiply: \"\")

\

\"\"              (Add: \"\")

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\"\"                    (Subtract: \"\")

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\"\"                              (Subtract: \"\")                               \"\"

\

Replace x = – 4 in original function.

\

\"\"

\

Evaluate powers: \"\"

\

\"\"

\

\"\"     (Multiply: \"\")

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\"\"           (Product of two same signs is positive)

\

\"\"                       (Add: \"\")

\

\"\"                               (Subtract: \"\")                             \"\"

\

\"\" and \"\".