SOLUTION: solve, using qudratic formula x(3x+7)-3x=0

Question 41064: solve, using qudratic formula
x(3x+7)-3x=0
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
x(3x+7)-3x=0
3x^2+7x-3x=0
3x^2+4x=0
a=3,b=4,c=0

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=16 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 0, -1.33333333333333. Here's your graph:

Hope this helps.
Cheers,
Stan H.

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