Do you need to know what two numbers multiply to 66 and add to -21? In other words, do you need to find the two numbers whose product is 66 and sum is -21? No problem! The two numbers that multiply to 66 and add to -21 are as follows:
-17.15207
-3.84793
Here is the math to prove that our above answer to "What two numbers multiply to 66 and add to -21?" is correct:
Multiply:
-17.15207 × -3.84793 ≈ 66
Add
-17.15207 + -3.84793 = -21
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: