# 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.
Simplify the numerator.
One to any power is one.
Multiply by .
Multiply by .
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