Write in Standard Form (x+4)(x-4)

$(x + 4) (x - 4)$

To write a polynomial in standard form, simplify and then arrange the terms in descending order.

$a x^{2} + b x + c$

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

Apply the distributive property.

$x (x - 4) + 4 (x - 4)$

Apply the distributive property.

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

Apply the distributive property.

$x \cdot x + x \cdot - 4 + 4 x + 4 \cdot - 4$

Simplify terms.

Combine the opposite terms in $x \cdot x + x \cdot - 4 + 4 x + 4 \cdot - 4$ .

Reorder the factors in the terms $x \cdot - 4$ and $4 x$ .

$x \cdot x - 4 x + 4 x + 4 \cdot - 4$

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

$x \cdot x + 0 + 4 \cdot - 4$

Add $x \cdot x$ and $0$ .

$x \cdot x + 4 \cdot - 4$

Simplify each term.

Multiply $x$ by $x$ .

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

Multiply $4$ by $- 4$ .

$x^{2} - 16$