Precalculus Examples

$\frac{1 + 2 j + j + 2 (- 1)}{1 - 4 \cdot - 1}$

Step 1

Simplify the numerator.

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Step 1.1

Multiply $2$ by $- 1$ .

$\frac{1 + 2 j + j - 2}{1 - 4 \cdot - 1}$

Step 1.2

Subtract $2$ from $1$ .

$\frac{2 j + j - 1}{1 - 4 \cdot - 1}$

Step 1.3

Add $2 j$ and $j$ .

$\frac{3 j - 1}{1 - 4 \cdot - 1}$

$\frac{3 j - 1}{1 - 4 \cdot - 1}$

Step 2

Simplify the denominator.

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Step 2.1

Multiply $- 4$ by $- 1$ .

$\frac{3 j - 1}{1 + 4}$

Step 2.2

Add $1$ and $4$ .

$\frac{3 j - 1}{5}$

$\frac{3 j - 1}{5}$

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