# Simplify (2cos(theta)-1)(2cos(theta)+1)

Simplify (2cos(theta)-1)(2cos(theta)+1)
Expand using the FOIL Method.
Apply the distributive property.
Apply the distributive property.
Apply the distributive property.
Simplify terms.
Combine the opposite terms in .
Reorder the factors in the terms and .
Subtract from .
Simplify each term.
Multiply .
Multiply by .
Raise to the power of .
Raise to the power of .
Use the power rule to combine exponents.
Multiply by .
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### Name

Name two billion eighty-four million nine hundred eleven thousand nine hundred sixty-two

### Interesting facts

• 2084911962 has 16 divisors, whose sum is 4765513152
• The reverse of 2084911962 is 2691194802
• Previous prime number is 3

### Basic properties

• Is Prime? no
• Number parity even
• Number length 10
• Sum of Digits 42
• Digital Root 6

### Name

Name one billion six hundred thirty-three million five hundred forty-one thousand one hundred eighteen

### Interesting facts

• 1633541118 has 64 divisors, whose sum is 3854158848
• The reverse of 1633541118 is 8111453361
• Previous prime number is 17

### Basic properties

• Is Prime? no
• Number parity even
• Number length 10
• Sum of Digits 33
• Digital Root 6

### Name

Name five hundred thirty-nine million seven hundred forty-three thousand one hundred sixty-one

### Interesting facts

• 539743161 has 16 divisors, whose sum is 742889664
• The reverse of 539743161 is 161347935
• Previous prime number is 37

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 9
• Sum of Digits 39
• Digital Root 3