SOLUTION: Use the quadratic formula to find the roots of the equation. Round to tenths if necessary. 3x2 - 4x - 8 = 0

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Question 244515: Use the quadratic formula to find the roots of the equation. Round to tenths if necessary. 3x2 - 4x - 8 = 0
Answer by solver91311(24713)   (Show Source): You can put this solution on YOUR website!
Solved by pluggable solver: SOLVE quadratic equation with variable
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=112 is greater than zero. That means that there are two solutions: .




Quadratic expression can be factored:

Again, the answer is: 2.43050087404306, -1.09716754070973. Here's your graph:



Remember to round to the nearest tenth per the instructions.


John
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