Do you need to know what two numbers multiply to 21 and add to -12? In other words, do you need to find the two numbers whose product is 21 and sum is -12? No problem! The two numbers that multiply to 21 and add to -12 are as follows:
-9.87298
-2.12702
Here is the math to prove that our above answer to "What two numbers multiply to 21 and add to -12?" is correct:
Multiply:
-9.87298 × -2.12702 ≈ 21
Add
-9.87298 + -2.12702 = -12
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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