Do you need to know what two numbers multiply to 81 and add to -42? In other words, do you need to find the two numbers whose product is 81 and sum is -42? No problem! The two numbers that multiply to 81 and add to -42 are as follows:
-39.97367
-2.02633
Here is the math to prove that our above answer to "What two numbers multiply to 81 and add to -42?" is correct:
Multiply:
-39.97367 × -2.02633 ≈ 81
Add
-39.97367 + -2.02633 = -42
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: