Use synthetic division to find the function values.
$f (x) = x^{4} - 16;$ find $f (1), f (- 1)$
$f (1) = ◻$ (Type an exact answer, using radicals as needed)
$f (- 1) = ◻$ (Type an exact answer, using radicals as needed.)

Answer

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Answer

So, $f (1) = - 15$ and $f (- 1) = - 15$

Steps

Step 1 ：Substitute $x = 1$ into the function $f (x) = x^{4} - 16$ to find $f (1)$

Step 2 ：Calculate $f (1) = 1^{4} - 16 = - 15$

Step 3 ：Substitute $x = - 1$ into the function $f (x) = x^{4} - 16$ to find $f (- 1)$

Step 4 ：Calculate $f (- 1) = (- 1)^{4} - 16 = - 15$

Step 5 ：So, $f (1) = - 15$ and $f (- 1) = - 15$