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 eight hundred thirty-six million two hundred six thousand three hundred seventy-two

Interesting facts

  • 836206372 has 8 divisors, whose sum is 1881464346
  • The reverse of 836206372 is 273602638
  • Previous prime number is 2

Basic properties

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

Name

Name one billion three hundred thirty-six million fifty-four thousand eight hundred twenty-two

Interesting facts

  • 1336054822 has 8 divisors, whose sum is 2021817816
  • The reverse of 1336054822 is 2284506331
  • Previous prime number is 113

Basic properties

  • Is Prime? no
  • Number parity even
  • Number length 10
  • Sum of Digits 34
  • Digital Root 7

Name

Name one billion six hundred sixty-seven million six hundred seventy-two thousand six hundred sixty-eight

Interesting facts

  • 1667672668 has 16 divisors, whose sum is 3755802960
  • The reverse of 1667672668 is 8662767661
  • Previous prime number is 1063

Basic properties

  • Is Prime? no
  • Number parity even
  • Number length 10
  • Sum of Digits 55
  • Digital Root 1