Do you need to know what two numbers multiply to 80 and add to -81? In other words, do you need to find the two numbers whose product is 80 and sum is -81? No problem! The two numbers that multiply to 80 and add to -81 are as follows:
-80
-1
Here is the math to prove that our above answer to "What two numbers multiply to 80 and add to -81?" is correct:
Multiply:
-80 × -1 = 80
Add
-80 + -1 = -81
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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