Do you need to know what two numbers multiply to -21 and add to 10? In other words, do you need to find the two numbers whose product is -21 and sum is 10? No problem! The two numbers that multiply to -21 and add to 10 are as follows:
-1.78233
11.78233
Here is the math to prove that our above answer to "What two numbers multiply to -21 and add to 10?" is correct:
Multiply:
-1.78233 × 11.78233 ≈ -21
Add
-1.78233 + 11.78233 = 10
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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