Solve by Factoring w^2-2w=15
Move to the left side of the equation by subtracting it from both sides.
Consider the form . Find a pair of integers whose product is and whose sum is . In this case, whose product is and whose sum is .
Write the factored form using these integers.
If any individual factor on the left side of the equation is equal to , the entire expression will be equal to .
Set the first factor equal to .
Add to both sides of the equation.
Set the next factor equal to .
Subtract from both sides of the equation.
The final solution is all the values that make true.
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Name
| Name | one billion seven hundred twenty-eight million eight hundred sixty-seven thousand four hundred fifty-five |
|---|
Interesting facts
- 1728867455 has 4 divisors, whose sum is 1778263704
- The reverse of 1728867455 is 5547688271
- Previous prime number is 35
Basic properties
- Is Prime? no
- Number parity odd
- Number length 10
- Sum of Digits 53
- Digital Root 8
Name
| Name | one billion one hundred seventeen million sixty-six thousand fifteen |
|---|
Interesting facts
- 1117066015 has 16 divisors, whose sum is 1447336800
- The reverse of 1117066015 is 5106607111
- Previous prime number is 389
Basic properties
- Is Prime? no
- Number parity odd
- Number length 10
- Sum of Digits 28
- Digital Root 1
Name
| Name | one billion nine hundred thirty-five million five hundred fifty-nine thousand seven hundred seven |
|---|
Interesting facts
- 1935559707 has 8 divisors, whose sum is 2623053840
- The reverse of 1935559707 is 7079555391
- Previous prime number is 61
Basic properties
- Is Prime? no
- Number parity odd
- Number length 10
- Sum of Digits 51
- Digital Root 6