Solve by Completing the Square x^2+22x=31

Solve by Completing the Square x^2+22x=31
To create a trinomial square on the left side of the equation, find a value that is equal to the square of half of .
Add the term to each side of the equation.
Simplify the equation.
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Raise to the power of .
Simplify .
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Raise to the power of .
Add and .
Factor the perfect trinomial square into .
Solve the equation for .
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Take the square root of each side of the equation to set up the solution for
Remove the perfect root factor under the radical to solve for .
Simplify the right side of the equation.
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Rewrite as .
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Factor out of .
Rewrite as .
Pull terms out from under the radical.
Remove parentheses.
Subtract from both sides of the equation.
The result can be shown in multiple forms.
Exact Form:
Decimal Form:
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Name

Name one hundred fifty-three million one hundred sixty-eight thousand seven hundred fifty-seven

Interesting facts

  • 153168757 has 8 divisors, whose sum is 200057216
  • The reverse of 153168757 is 757861351
  • Previous prime number is 7

Basic properties

  • Is Prime? no
  • Number parity odd
  • Number length 9
  • Sum of Digits 43
  • Digital Root 7

Name

Name ninety-seven million six hundred thirty-eight thousand seven hundred seventy-seven

Interesting facts

  • 97638777 has 8 divisors, whose sum is 104048160
  • The reverse of 97638777 is 77783679
  • Previous prime number is 19

Basic properties

  • Is Prime? no
  • Number parity odd
  • Number length 8
  • Sum of Digits 54
  • Digital Root 9

Name

Name six hundred twenty-seven million seven hundred seventy-one thousand one hundred ninety-nine

Interesting facts

  • 627771199 has 4 divisors, whose sum is 684841320
  • The reverse of 627771199 is 991177726
  • Previous prime number is 11

Basic properties

  • Is Prime? no
  • Number parity odd
  • Number length 9
  • Sum of Digits 49
  • Digital Root 4