Precalculus Examples

$| - 4 | - (- 4)$

Step 1

Simplify each term.

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Step 1.1

The absolute value is the distance between a number and zero. The distance between $- 4$ and $0$ is $4$ .

$4 - (- 4)$

Step 1.2

Multiply $- 1$ by $- 4$ .

$4 + 4$

Step 2

Add $4$ and $4$ .

$8$

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$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$