Do you need to know what two numbers multiply to 128 and add to -129? In other words, do you need to find the two numbers whose product is 128 and sum is -129? No problem! The two numbers that multiply to 128 and add to -129 are as follows:
-128
-1
Here is the math to prove that our above answer to "What two numbers multiply to 128 and add to -129?" is correct:
Multiply:
-128 × -1 = 128
Add
-128 + -1 = -129
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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