SOLUTION: 3^x2 – 10x – 8 = 0

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Question 161948: 3^x2 – 10x – 8 = 0
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
3^x2 – 10x – 8 = 0
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Solve for x?
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=196 is greater than zero. That means that there are two solutions: .




Quadratic expression can be factored:

Again, the answer is: 4, -0.666666666666667. Here's your graph:

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The onsite solver is handy, and makes a nice graph, but its factoring is not right when the coefficient of the x^2 term is not 1.
The factors are (3x+2)*(x-4)
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