Do you need to know what two numbers multiply to 81 and add to -128? In other words, do you need to find the two numbers whose product is 81 and sum is -128? No problem! The two numbers that multiply to 81 and add to -128 are as follows:
-127.36403
-0.63597
Here is the math to prove that our above answer to "What two numbers multiply to 81 and add to -128?" is correct:
Multiply:
-127.36403 × -0.63597 ≈ 81
Add
-127.36403 + -0.63597 = -128
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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