Simplify (3x+4)(x-5)

$(3 x + 4) (x - 5)$

Step 1

Expand $(3 x + 4) (x - 5)$ using the FOIL Method.

Apply the distributive property.

$3 x (x - 5) + 4 (x - 5)$

Apply the distributive property.

$3 x \cdot x + 3 x \cdot - 5 + 4 (x - 5)$

Apply the distributive property.

$3 x \cdot x + 3 x \cdot - 5 + 4 x + 4 \cdot - 5$

Step 2

Simplify and combine like terms.

Simplify each term.

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

Move $x$ .

$3 (x \cdot x) + 3 x \cdot - 5 + 4 x + 4 \cdot - 5$

Multiply $x$ by $x$ .

$3 x^{2} + 3 x \cdot - 5 + 4 x + 4 \cdot - 5$

Multiply $- 5$ by $3$ .

$3 x^{2} - 15 x + 4 x + 4 \cdot - 5$

Multiply $4$ by $- 5$ .

$3 x^{2} - 15 x + 4 x - 20$

Add $- 15 x$ and $4 x$ .

$3 x^{2} - 11 x - 20$