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Quadratic Equations and Parabolas
Quadratic Equation Customizable Word Problems
-> SOLUTION: x(squared)-18x-40=0
You enter your algebra equation or inequality -
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SOLVE quadratic equation with variable
(in our case
) has the following solutons:
For these solutions to exist, the
should not be a negative number.
First, we need to compute the discriminant
Discriminant d=484 is greater than zero. That means that there are two solutions:
can be factored:
Again, the answer is: 20, -2. Here's your graph:
Remember this is only one branch of the quadratic and it is not a straight line (the other x-intercept is at x=20).