SOLUTION: c(squared)-7c-2=4

Question 596653: c(squared)-7c-2=4
Answer by racoon(5) (Show Source): You can put this solution on YOUR website!
c(squared)-7c-2=4
First, bring 4 to the other side of the equation so that the equation will equal to 0.
c(squared)-7c-2-4=0
Then, solve the leveled numbers @unknown
c(squared)-7c-6=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: 3, -1. Here's your graph:

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