Solve by Factoring x^2+3x-28=0

Solve by Factoring x^2+3x-28=0
Factor using the AC method.
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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.
If any individual factor on the left side of the equation is equal to , the entire expression will be equal to .
Set the first factor equal to and solve.
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Set the first factor equal to .
Add to both sides of the equation.
Set the next factor equal to and solve.
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Set the next factor equal to .
Subtract from both sides of the equation.
The final solution is all the values that make true.
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Name

Name one hundred ninety-eight million six hundred sixty-one thousand five hundred twenty

Interesting facts

  • 198661520 has 128 divisors, whose sum is 1214632584
  • The reverse of 198661520 is 025166891
  • Previous prime number is 15817

Basic properties

  • Is Prime? no
  • Number parity even
  • Number length 9
  • Sum of Digits 38
  • Digital Root 2

Name

Name one billion nine hundred twenty-five million eight hundred eight thousand seven hundred ninety-six

Interesting facts

  • 1925808796 has 16 divisors, whose sum is 4404104280
  • The reverse of 1925808796 is 6978085291
  • Previous prime number is 61

Basic properties

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

Name

Name one billion one hundred fourteen million three hundred four thousand ninety-four

Interesting facts

  • 1114304094 has 8 divisors, whose sum is 1733362008
  • The reverse of 1114304094 is 4904034111
  • Previous prime number is 27

Basic properties

  • Is Prime? no
  • Number parity even
  • Number length 10
  • Sum of Digits 27
  • Digital Root 9