# Factor x^2+4x-21

Factor x^2+4x-21
Consider the form . Find a pair of integers whose product is and whose sum is . In this case, whose product is and whose sum is .
Write the factored form using these integers.
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### Name

Name one billion twenty-nine million seven hundred thirty-three thousand six hundred eighty-nine

### Interesting facts

• 1029733689 has 4 divisors, whose sum is 1372978256
• The reverse of 1029733689 is 9863379201
• Previous prime number is 3

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 10
• Sum of Digits 48
• Digital Root 3

### Name

Name one hundred thirty-eight million six hundred forty thousand ninety-six

### Interesting facts

• 138640096 has 128 divisors, whose sum is 1203199920
• The reverse of 138640096 is 690046831
• Previous prime number is 7

### Basic properties

• Is Prime? no
• Number parity even
• Number length 9
• Sum of Digits 37
• Digital Root 1

### Name

Name four hundred eighteen million forty-three thousand two hundred forty-six

### Interesting facts

• 418043246 has 16 divisors, whose sum is 648777600
• The reverse of 418043246 is 642340814
• Previous prime number is 449

### Basic properties

• Is Prime? no
• Number parity even
• Number length 9
• Sum of Digits 32
• Digital Root 5