Do you need to know what two numbers multiply to -64 and add to 128? In other words, do you need to find the two numbers whose product is -64 and sum is 128? No problem! The two numbers that multiply to -64 and add to 128 are as follows:
-0.49806
128.49806
Here is the math to prove that our above answer to "What two numbers multiply to -64 and add to 128?" is correct:
Multiply:
-0.49806 × 128.49806 ≈ -64
Add
-0.49806 + 128.49806 = 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.
Multiply Add Calculator
Need another answer? Submit another set of values below: