Evaluate Using the Given Value f(-63) = cube root of -63-1

$f (- 63) = \sqrt[3]{- 63 - 1}$

Step 1

Subtract $1$ from $- 63$ .

$f (- 63) = \sqrt[3]{- 64}$

Step 2

Rewrite $- 64$ as ${(- 4)}^{3}$ .

$f (- 63) = \sqrt[3]{{(- 4)}^{3}}$

Step 3

Pull terms out from under the radical, assuming real numbers.

$f (- 63) = - 4$