Multiply (3x+3)(3x-3)

$(3 x + 3) (3 x - 3)$

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

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Apply the distributive property.

$3 x (3 x - 3) + 3 (3 x - 3)$

Apply the distributive property.

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

Apply the distributive property.

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

Simplify terms.

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Combine the opposite terms in $3 x (3 x) + 3 x \cdot - 3 + 3 (3 x) + 3 \cdot - 3$ .

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Reorder the factors in the terms $3 x \cdot - 3$ and $3 (3 x)$ .

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

Add $- 3 \cdot 3 x$ and $3 \cdot 3 x$ .

$3 x (3 x) + 0 + 3 \cdot - 3$

Add $3 x (3 x)$ and $0$ .

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

Simplify each term.

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Multiply $x$ by $x$ .

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

Multiply $3$ by $3$ .

$9 x^{2} + 3 \cdot - 3$

Multiply $3$ by $- 3$ .

$9 x^{2} - 9$

Multiply (3x+3)(3x-3)

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