Do you need to know what two numbers multiply to 81 and add to -90? In other words, do you need to find the two numbers whose product is 81 and sum is -90? No problem! The two numbers that multiply to 81 and add to -90 are as follows:
-89.09082
-0.90918
Here is the math to prove that our above answer to "What two numbers multiply to 81 and add to -90?" is correct:
Multiply:
-89.09082 × -0.90918 ≈ 81
Add
-89.09082 + -0.90918 = -90
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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