SOLUTION: 3K SQUARED+7K=4 TEXTBOOK: ISBN 0-321-12711-0

Question 64014This question is from textbook
: 3K SQUARED+7K=4
TEXTBOOK: ISBN 0-321-12711-0 This question is from textbook

Answer by sarahschober(35) (Show Source): You can put this solution on YOUR website!
Just substitute k for x

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=97 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 0.474809633632684, -2.80814296696602. Here's your graph:

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