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Precalculus Examples

f (x) = x + 2

$f (x) = x + 2$ ,

f (3)

$f (3)$

Step 1

Replace the variable

x

$x$ with

3

$3$ in the expression.

f (3) = (3) + 2

$f (3) = (3) + 2$

Step 2

Simplify

(3) + 2

$(3) + 2$ .

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Step 2.1

Remove parentheses.

(3) + 2

$(3) + 2$

Step 2.2

Add

3

$3$ and

2

$2$ .

5

$5$

5

$5$

Enter YOUR Problem

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

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