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 two hundred three million five hundred seventy-six thousand eight hundred ninety-eight

Interesting facts

  • 203576898 has 32 divisors, whose sum is 468679680
  • The reverse of 203576898 is 898675302
  • Previous prime number is 139

Basic properties

  • Is Prime? no
  • Number parity even
  • Number length 9
  • Sum of Digits 48
  • Digital Root 3

Name

Name one billion six hundred forty-three million two hundred twenty-one thousand five hundred sixty-eight

Interesting facts

  • 1643221568 has 256 divisors, whose sum is 19531134720
  • The reverse of 1643221568 is 8651223461
  • Previous prime number is 23

Basic properties

  • Is Prime? no
  • Number parity even
  • Number length 10
  • Sum of Digits 38
  • Digital Root 2

Name

Name five hundred forty-six million eight hundred forty-one thousand five hundred ninety-four

Interesting facts

  • 546841594 has 16 divisors, whose sum is 885427200
  • The reverse of 546841594 is 495148645
  • Previous prime number is 431

Basic properties

  • Is Prime? no
  • Number parity even
  • Number length 9
  • Sum of Digits 46
  • Digital Root 1