SOLUTION: (2x-3)(x+1)=-1

Question 1081450: (2x-3)(x+1)=-1
Found 2 solutions by Alan3354, MathLover1:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
(2x-3)(x+1)=-1
----
2x^2 - x - 3 = -1
2x^2 - x - 2 = 0

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=17 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 1.28077640640442, -0.780776406404415. Here's your graph:

Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!

exact solutions:
or

approximately:
or

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