Do you need to know what two numbers multiply to 21 and add to -66? In other words, do you need to find the two numbers whose product is 21 and sum is -66? No problem! The two numbers that multiply to 21 and add to -66 are as follows:
-65.68027
-0.31973
Here is the math to prove that our above answer to "What two numbers multiply to 21 and add to -66?" is correct:
Multiply:
-65.68027 × -0.31973 ≈ 21
Add
-65.68027 + -0.31973 = -66
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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