Algebra Examples

$f (- 7) = \frac{- 3 {(- 7)}^{2} - 7}{2}$

Step 1

Simplify the numerator.

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Step 1.1

Raise $- 7$ to the power of $2$ .

$f (- 7) = \frac{- 3 \cdot 49 - 7}{2}$

Step 1.2

Multiply $- 3$ by $49$ .

$f (- 7) = \frac{- 147 - 7}{2}$

Step 1.3

Subtract $7$ from $- 147$ .

$f (- 7) = \frac{- 154}{2}$

$f (- 7) = \frac{- 154}{2}$

Step 2

Divide $- 154$ by $2$ .

$f (- 7) = - 77$

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