Do you need to know what two numbers multiply to -21 and add to -13? In other words, do you need to find the two numbers whose product is -21 and sum is -13? No problem! The two numbers that multiply to -21 and add to -13 are as follows:
-14.45299
1.45299
Here is the math to prove that our above answer to "What two numbers multiply to -21 and add to -13?" is correct:
Multiply:
-14.45299 × 1.45299 ≈ -21
Add
-14.45299 + 1.45299 = -13
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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