Do you need to know what two numbers multiply to 21 and add to -79? In other words, do you need to find the two numbers whose product is 21 and sum is -79? No problem! The two numbers that multiply to 21 and add to -79 are as follows:
-78.73328
-0.26672
Here is the math to prove that our above answer to "What two numbers multiply to 21 and add to -79?" is correct:
Multiply:
-78.73328 × -0.26672 ≈ 21
Add
-78.73328 + -0.26672 = -79
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: