Do you need to know what two numbers multiply to 9 and add to -90? In other words, do you need to find the two numbers whose product is 9 and sum is -90? No problem! The two numbers that multiply to 9 and add to -90 are as follows:
-89.89989
-0.10011
Here is the math to prove that our above answer to "What two numbers multiply to 9 and add to -90?" is correct:
Multiply:
-89.89989 × -0.10011 ≈ 9
Add
-89.89989 + -0.10011 = -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.
Multiply Add Calculator
Need another answer? Submit another set of values below: