Expand Using Sum/Difference Formulas (3+4x)(3-4x)

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Trigonometry

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

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

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Apply the distributive property.

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

Apply the distributive property.

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

Apply the distributive property.

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

Simplify and combine like terms.

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Simplify each term.

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Multiply $3$ by $3$ .

$9 + 3 (- 4 x) + 4 x \cdot 3 + 4 x (- 4 x)$

Multiply $- 4$ by $3$ .

$9 - 12 x + 4 x \cdot 3 + 4 x (- 4 x)$

Multiply $3$ by $4$ .

$9 - 12 x + 12 x + 4 x (- 4 x)$

Rewrite using the commutative property of multiplication.

$9 - 12 x + 12 x + 4 \cdot - 4 x \cdot x$

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

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Move $x$ .

$9 - 12 x + 12 x + 4 \cdot - 4 (x \cdot x)$

Multiply $x$ by $x$ .

$9 - 12 x + 12 x + 4 \cdot - 4 x^{2}$

Multiply $4$ by $- 4$ .

$9 - 12 x + 12 x - 16 x^{2}$

Add $- 12 x$ and $12 x$ .

$9 + 0 - 16 x^{2}$

Add $9$ and $0$ .

$9 - 16 x^{2}$

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Name

Name	one billion six hundred twenty-four million thirty-six thousand fifty-three

Interesting facts

1624036053 has 4 divisors, whose sum is 2165381408
The reverse of 1624036053 is 3506304261
Previous prime number is 3

Basic properties

Is Prime? no
Number parity odd
Number length 10
Sum of Digits 30
Digital Root 3

Name

Name	two billion sixteen million five hundred seventy thousand seventy-seven

Interesting facts

2016570077 has 4 divisors, whose sum is 2016797856
The reverse of 2016570077 is 7700756102
Previous prime number is 9227

Basic properties

Is Prime? no
Number parity odd
Number length 10
Sum of Digits 35
Digital Root 8

Name

Name	one billion eighty million nine hundred nine thousand five hundred forty-three

Interesting facts

1080909543 has 8 divisors, whose sum is 1647100288
The reverse of 1080909543 is 3459090801
Previous prime number is 3

Basic properties

Is Prime? no
Number parity odd
Number length 10
Sum of Digits 39
Digital Root 3

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