SOLUTION: 3=x(2x+9)

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Question 864077: 3=x(2x+9)
Answer by tommyt3rd(5050)   (Show Source): You can put this solution on YOUR website!
3=x(2x+9)
2x^2+9x-2=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=97 is greater than zero. That means that there are two solutions: .




Quadratic expression can be factored:

Again, the answer is: 0.212214450449026, -4.71221445044903. Here's your graph:
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