Simplify (x-7)(x+9)

$(x - 7) (x + 9)$

Step 1

Expand $(x - 7) (x + 9)$ using the FOIL Method.

Apply the distributive property.

$x (x + 9) - 7 (x + 9)$

Apply the distributive property.

$x \cdot x + x \cdot 9 - 7 (x + 9)$

Apply the distributive property.

$x \cdot x + x \cdot 9 - 7 x - 7 \cdot 9$

$x \cdot x + x \cdot 9 - 7 x - 7 \cdot 9$

Step 2

Simplify and combine like terms.

Simplify each term.

Multiply $x$ by $x$ .

$x^{2} + x \cdot 9 - 7 x - 7 \cdot 9$

Move $9$ to the left of $x$ .

$x^{2} + 9 \cdot x - 7 x - 7 \cdot 9$

Multiply $- 7$ by $9$ .

$x^{2} + 9 x - 7 x - 63$

$x^{2} + 9 x - 7 x - 63$

Subtract $7 x$ from $9 x$ .

$x^{2} + 2 x - 63$

$x^{2} + 2 x - 63$

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