Do you need to know what two numbers multiply to 99 and add to -90? In other words, do you need to find the two numbers whose product is 99 and sum is -90? No problem! The two numbers that multiply to 99 and add to -90 are as follows:
-88.88622
-1.11378
Here is the math to prove that our above answer to "What two numbers multiply to 99 and add to -90?" is correct:
Multiply:
-88.88622 × -1.11378 ≈ 99
Add
-88.88622 + -1.11378 = -90
The answers above are rounded if necessary. Therefore, if you double check that the answer above is correct by using a calculator, you may find it to be slightly off.
Multiply Add Calculator
Need another answer? Submit another set of values below: