SOLUTION: Solve by applying the Quadratic Formula. Show the work, so I can do my other problems. Thank you in advance. Q: 25b^2-30b-7=0

Question 231511: Solve by applying the Quadratic Formula. Show the work, so I can do my other problems. Thank you in advance.
Q: 25b^2-30b-7=0
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
25b^2-30b-7=0
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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=1600 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 1.4, -0.2. Here's your graph:

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The solver uses x, just sub b for x.

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