Solve Using the Quadratic Formula x^2+x-1=0

Solve Using the Quadratic Formula x^2+x-1=0
Use the quadratic formula to find the solutions.
Substitute the values , , and into the quadratic formula and solve for .
Simplify.
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Simplify the numerator.
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One to any power is one.
Multiply by .
Multiply by .
Add and .
Multiply by .
The result can be shown in multiple forms.
Exact Form:
Decimal Form:
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Name

Name one billion seven hundred ninety-seven million five hundred one thousand two hundred three

Interesting facts

  • 1797501203 has 8 divisors, whose sum is 1820051856
  • The reverse of 1797501203 is 3021057971
  • Previous prime number is 2741

Basic properties

  • Is Prime? no
  • Number parity odd
  • Number length 10
  • Sum of Digits 35
  • Digital Root 8

Name

Name one billion four hundred twenty million one hundred twenty-seven thousand nine hundred seventy

Interesting facts

  • 1420127970 has 64 divisors, whose sum is 3553873920
  • The reverse of 1420127970 is 0797210241
  • Previous prime number is 127

Basic properties

  • Is Prime? no
  • Number parity even
  • Number length 10
  • Sum of Digits 33
  • Digital Root 6

Name

Name five hundred eight million one hundred sixty-eight thousand four hundred thirty-one

Interesting facts

  • 508168431 has 4 divisors, whose sum is 526989512
  • The reverse of 508168431 is 134861805
  • Previous prime number is 27

Basic properties

  • Is Prime? no
  • Number parity odd
  • Number length 9
  • Sum of Digits 36
  • Digital Root 9