Precalculus Examples

$g (a) = 4 a$ ; Find $g (2 a)$

Step 1

Replace the variable $a$ with $2 a$ in the expression.

$g (2 a) = 4 (2 a)$

Step 2

Simplify $4 (2 a)$ .

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Step 2.1

Remove parentheses.

$4 (2 a)$

Step 2.2

Multiply $2$ by $4$ .

$8 a$