# Verify the Identity x^2-1=(x-1)(x+1)

Verify the Identity x^2-1=(x-1)(x+1)
Simplify the right side.
Simplify .
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 by .
Multiply by .
Since the two sides have been shown to be equivalent, the equation is an identity.
is an identity.
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### Name

Name one billion three hundred ninety-nine million eight hundred ninety-six thousand eight hundred forty-three

### Interesting facts

• 1399896843 has 4 divisors, whose sum is 1866529128
• The reverse of 1399896843 is 3486989931
• Previous prime number is 3

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 10
• Sum of Digits 60
• Digital Root 6

### Name

Name three hundred fifty-nine million three hundred ninety-two thousand twelve

### Interesting facts

• 359392012 has 32 divisors, whose sum is 956020320
• The reverse of 359392012 is 210293953
• Previous prime number is 29

### Basic properties

• Is Prime? no
• Number parity even
• Number length 9
• Sum of Digits 34
• Digital Root 7

### Name

Name one billion nine hundred thirty-six million five hundred forty-four thousand three hundred twenty-eight

### Interesting facts

• 1936544328 has 128 divisors, whose sum is 9689673600
• The reverse of 1936544328 is 8234456391
• Previous prime number is 2039

### Basic properties

• Is Prime? no
• Number parity even
• Number length 10
• Sum of Digits 45
• Digital Root 9