Rewrite <math><mstyle displaystyle="true"><mn>81</mn></mstyle></math> as <math><mstyle displaystyle="true"><msup><mrow><mn>9</mn></mrow><mrow><mn>2</mn></mrow></msup></mstyle></math> .

Since both terms are perfect squares, factor using the difference of squares formula, <math><mstyle displaystyle="true"><msup><mrow><mi>a</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>-</mo><msup><mrow><mi>b</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>=</mo><mrow><mo>(</mo><mi>a</mi><mo>+</mo><mi>b</mi><mo>)</mo></mrow><mrow><mo>(</mo><mi>a</mi><mo>-</mo><mi>b</mi><mo>)</mo></mrow></mstyle></math> where <math><mstyle displaystyle="true"><mi>a</mi><mo>=</mo><mi>x</mi></mstyle></math> and <math><mstyle displaystyle="true"><mi>b</mi><mo>=</mo><mn>9</mn></mstyle></math> .

Do you know how to Factor x^2-81? If not, you can write to our math experts in our application. The best solution for your task you can find above on this page.

Name | two hundred fifteen million eight hundred forty-nine thousand seven hundred forty-six |
---|

- 215849746 has 8 divisors, whose sum is
**324466380** - The reverse of 215849746 is
**647948512** - Previous prime number is
**469**

- Is Prime? no
- Number parity even
- Number length 9
- Sum of Digits 46
- Digital Root 1

Name | one hundred sixty-nine million three hundred eighty-eight thousand two hundred ninety-six |
---|

- 169388296 has 128 divisors, whose sum is
**668663424** - The reverse of 169388296 is
**692883961** - Previous prime number is
**241**

- Is Prime? no
- Number parity even
- Number length 9
- Sum of Digits 52
- Digital Root 7

Name | two billion thirty-two million six hundred forty-eight thousand eight hundred seventy-five |
---|

- 2032648875 has 16 divisors, whose sum is
**2164597344** - The reverse of 2032648875 is
**5788462302** - Previous prime number is
**797**

- Is Prime? no
- Number parity odd
- Number length 10
- Sum of Digits 45
- Digital Root 9