SOLUTION: 2x*-3x-4 x= -3

Question 77582This question is from textbook BEGINNING ALGEBRA
: 2x*-3x-4 x= -3 This question is from textbook BEGINNING ALGEBRA

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

Multiply

Add 3 to both sides

Factor out a negative 1
Now use the quadratic formula to solve for x:

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=88 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 0.448402626637238, -1.11506929330391. Here's your graph:

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