Move <math><mstyle displaystyle="true"><mn>15</mn></mstyle></math> to the left side of the equation by subtracting it from both sides.

Consider the form <math><mstyle displaystyle="true"><msup><mrow><mi>x</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>+</mo><mi>b</mi><mi>x</mi><mo>+</mo><mi>c</mi></mstyle></math> . Find a pair of integers whose product is <math><mstyle displaystyle="true"><mi>c</mi></mstyle></math> and whose sum is <math><mstyle displaystyle="true"><mi>b</mi></mstyle></math> . In this case, whose product is <math><mstyle displaystyle="true"><mo>-</mo><mn>15</mn></mstyle></math> and whose sum is <math><mstyle displaystyle="true"><mo>-</mo><mn>2</mn></mstyle></math> .

Write the factored form using these integers.

If any individual factor on the left side of the equation is equal to <math><mstyle displaystyle="true"><mn>0</mn></mstyle></math> , the entire expression will be equal to <math><mstyle displaystyle="true"><mn>0</mn></mstyle></math> .

Set the first factor equal to <math><mstyle displaystyle="true"><mn>0</mn></mstyle></math> .

Add <math><mstyle displaystyle="true"><mn>5</mn></mstyle></math> to both sides of the equation.

Set the next factor equal to <math><mstyle displaystyle="true"><mn>0</mn></mstyle></math> .

Subtract <math><mstyle displaystyle="true"><mn>3</mn></mstyle></math> from both sides of the equation.

The final solution is all the values that make <math><mstyle displaystyle="true"><mrow><mo>(</mo><mi>w</mi><mo>-</mo><mn>5</mn><mo>)</mo></mrow><mrow><mo>(</mo><mi>w</mi><mo>+</mo><mn>3</mn><mo>)</mo></mrow><mo>=</mo><mn>0</mn></mstyle></math> true.

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Name | one billion seven hundred twenty-eight million eight hundred sixty-seven thousand four hundred fifty-five |
---|

- 1728867455 has 4 divisors, whose sum is
**1778263704** - The reverse of 1728867455 is
**5547688271** - Previous prime number is
**35**

- Is Prime? no
- Number parity odd
- Number length 10
- Sum of Digits 53
- Digital Root 8

Name | one billion one hundred seventeen million sixty-six thousand fifteen |
---|

- 1117066015 has 16 divisors, whose sum is
**1447336800** - The reverse of 1117066015 is
**5106607111** - Previous prime number is
**389**

- Is Prime? no
- Number parity odd
- Number length 10
- Sum of Digits 28
- Digital Root 1

Name | one billion nine hundred thirty-five million five hundred fifty-nine thousand seven hundred seven |
---|

- 1935559707 has 8 divisors, whose sum is
**2623053840** - The reverse of 1935559707 is
**7079555391** - Previous prime number is
**61**

- Is Prime? no
- Number parity odd
- Number length 10
- Sum of Digits 51
- Digital Root 6