Do you need to know what two numbers multiply to -128 and add to -99? In other words, do you need to find the two numbers whose product is -128 and sum is -99? No problem! The two numbers that multiply to -128 and add to -99 are as follows:
-100.27647
1.27647
Here is the math to prove that our above answer to "What two numbers multiply to -128 and add to -99?" is correct:
Multiply:
-100.27647 × 1.27647 ≈ -128
Add
-100.27647 + 1.27647 = -99
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: