SOLUTION: graph 3x^2 -x -7 =0

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Question 345387: graph 3x^2 -x -7 =0
Found 2 solutions by ichudov, ewatrrr:
Answer by ichudov(507)   (Show Source): You can put this solution on YOUR website!
Just use the graphing solver.

Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!
Hi,

.
Using the Quadratic Formula to solve for x and graph the equation:

.
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=85 is greater than zero. That means that there are two solutions: .




Quadratic expression can be factored:

Again, the answer is: 1.70325740954881, -1.36992407621548. Here's your graph:
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