Do you need to know what two numbers multiply to 128 and add to -30? In other words, do you need to find the two numbers whose product is 128 and sum is -30? No problem! The two numbers that multiply to 128 and add to -30 are as follows:
-24.84886
-5.15114
Here is the math to prove that our above answer to "What two numbers multiply to 128 and add to -30?" is correct:
Multiply:
-24.84886 × -5.15114 ≈ 128
Add
-24.84886 + -5.15114 = -30
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: