Solve Using the Quadratic Formula x^2-4x-5=0

Solve Using the Quadratic Formula x^2-4x-5=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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Raise to the power of .
Multiply by .
Multiply by .
Add and .
Rewrite as .
Pull terms out from under the radical, assuming positive real numbers.
Multiply by .
Simplify .
The final answer is the combination of both solutions.
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Name

Name one billion two hundred thirty-four million nine hundred twenty thousand five hundred twenty-six

Interesting facts

  • 1234920526 has 32 divisors, whose sum is 2236151808
  • The reverse of 1234920526 is 6250294321
  • Previous prime number is 43

Basic properties

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

Name

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

Interesting facts

  • 1024451302 has 32 divisors, whose sum is 1782144000
  • The reverse of 1024451302 is 2031544201
  • Previous prime number is 883

Basic properties

  • Is Prime? no
  • Number parity even
  • Number length 10
  • Sum of Digits 22
  • Digital Root 4

Name

Name twenty-five million one hundred sixty-nine thousand one hundred eighty-five

Interesting facts

  • 25169185 has 4 divisors, whose sum is 30203028
  • The reverse of 25169185 is 58196152
  • Previous prime number is 5

Basic properties

  • Is Prime? no
  • Number parity odd
  • Number length 8
  • Sum of Digits 37
  • Digital Root 1