Do you need to know what two numbers multiply to -99 and add to 128? In other words, do you need to find the two numbers whose product is -99 and sum is 128? No problem! The two numbers that multiply to -99 and add to 128 are as follows:
-0.76882
128.76882
Here is the math to prove that our above answer to "What two numbers multiply to -99 and add to 128?" is correct:
Multiply:
-0.76882 × 128.76882 ≈ -99
Add
-0.76882 + 128.76882 = 128
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.
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