SOLUTION: what two numbers have a sum of -9 and a product of 9?

Algebra.Com
Question 364303: what two numbers have a sum of -9 and a product of 9?
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
x*(-9-x) = 9
-9x - x^2 = 9

Solved by pluggable solver: SOLVE quadratic equation (work shown, graph etc)
Quadratic equation (in our case ) has the following solutons:



For these solutions to exist, the discriminant should not be a negative number.

First, we need to compute the discriminant : .

Discriminant d=45 is greater than zero. That means that there are two solutions: .




Quadratic expression can be factored:

Again, the answer is: -1.14589803375032, -7.85410196624968. Here's your graph:

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I doubt that's what you expected.

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