# 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.
Simplify the numerator.
Raise to the power of .
Multiply by .
Multiply by .
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