# Factor x^2+18x+81

Factor x^2+18x+81
Rewrite as .
Check that the middle term is two times the product of the numbers being squared in the first term and third term.
Rewrite the polynomial.
Factor using the perfect square trinomial rule , where and .
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### Name

Name one billion three hundred thirty-eight million thirty-two thousand six hundred nine

### Interesting facts

• 1338032609 has 4 divisors, whose sum is 1338528516
• The reverse of 1338032609 is 9062308331
• Previous prime number is 2713

### Basic properties

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

### Name

Name one billion six hundred forty-seven million three hundred fifty-eight thousand six hundred twenty-two

### Interesting facts

• 1647358622 has 32 divisors, whose sum is 3123486912
• The reverse of 1647358622 is 2268537461
• Previous prime number is 37

### Basic properties

• Is Prime? no
• Number parity even
• Number length 10
• Sum of Digits 44
• Digital Root 8

### Name

Name one billion fifty-five million three hundred forty-one thousand two hundred five

### Interesting facts

• 1055341205 has 8 divisors, whose sum is 1267623000
• The reverse of 1055341205 is 5021435501
• Previous prime number is 1049

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 10
• Sum of Digits 26
• Digital Root 8