Algebra Examples

$q (x) = - 1$ ; $r (x) = 2 x^{2} + 1$

Step 1

Set up the composite result function.

$r (q (x))$

Step 2

Evaluate $r (- 1)$ by substituting in the value of $q$ into $r$ .

$r (- 1) = 2 {(- 1)}^{2} + 1$

Step 3

Simplify each term.

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Step 3.1

Raise $- 1$ to the power of $2$ .

$r (- 1) = 2 \cdot 1 + 1$

Step 3.2

Multiply $2$ by $1$ .

$r (- 1) = 2 + 1$

Step 4

Add $2$ and $1$ .

$r (- 1) = 3$