Do you need to know what two numbers multiply to 21 and add to -11? In other words, do you need to find the two numbers whose product is 21 and sum is -11? No problem! The two numbers that multiply to 21 and add to -11 are as follows:
-8.54138
-2.45862
Here is the math to prove that our above answer to "What two numbers multiply to 21 and add to -11?" is correct:
Multiply:
-8.54138 × -2.45862 ≈ 21
Add
-8.54138 + -2.45862 = -11
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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