Algebra Examples

$(x + 2) (x - 1)$

Step 1

Expand $(x + 2) (x - 1)$ using the FOIL Method.

Tap for more steps...

Step 1.1

Apply the distributive property.

$x (x - 1) + 2 (x - 1)$

Step 1.2

Apply the distributive property.

$x \cdot x + x \cdot - 1 + 2 (x - 1)$

Step 1.3

Apply the distributive property.

$x \cdot x + x \cdot - 1 + 2 x + 2 \cdot - 1$

$x \cdot x + x \cdot - 1 + 2 x + 2 \cdot - 1$

Step 2

Simplify and combine like terms.

Tap for more steps...

Step 2.1

Simplify each term.

Tap for more steps...

Step 2.1.1

Multiply $x$ by $x$ .

$x^{2} + x \cdot - 1 + 2 x + 2 \cdot - 1$

Step 2.1.2

Move $- 1$ to the left of $x$ .

$x^{2} - 1 \cdot x + 2 x + 2 \cdot - 1$

Step 2.1.3

Rewrite $- 1 x$ as $- x$ .

$x^{2} - x + 2 x + 2 \cdot - 1$

Step 2.1.4

Multiply $2$ by $- 1$ .

$x^{2} - x + 2 x - 2$

$x^{2} - x + 2 x - 2$

Step 2.2

Add $- x$ and $2 x$ .

$x^{2} + x - 2$

$x^{2} + x - 2$

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