Simplify (2x-1)(x+4)

$(2 x - 1) (x + 4)$

Step 1

Expand $(2 x - 1) (x + 4)$ using the FOIL Method.

Apply the distributive property.

$2 x (x + 4) - 1 (x + 4)$

Apply the distributive property.

$2 x \cdot x + 2 x \cdot 4 - 1 (x + 4)$

Apply the distributive property.

$2 x \cdot x + 2 x \cdot 4 - 1 x - 1 \cdot 4$

$2 x \cdot x + 2 x \cdot 4 - 1 x - 1 \cdot 4$

Step 2

Simplify and combine like terms.

Simplify each term.

Multiply $x$ by $x$ by adding the exponents.

Move $x$ .

$2 (x \cdot x) + 2 x \cdot 4 - 1 x - 1 \cdot 4$

Multiply $x$ by $x$ .

$2 x^{2} + 2 x \cdot 4 - 1 x - 1 \cdot 4$

$2 x^{2} + 2 x \cdot 4 - 1 x - 1 \cdot 4$

Multiply $4$ by $2$ .

$2 x^{2} + 8 x - 1 x - 1 \cdot 4$

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

$2 x^{2} + 8 x - x - 1 \cdot 4$

Multiply $- 1$ by $4$ .

$2 x^{2} + 8 x - x - 4$

$2 x^{2} + 8 x - x - 4$

Subtract $x$ from $8 x$ .

$2 x^{2} + 7 x - 4$

$2 x^{2} + 7 x - 4$

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