SOLUTION: 6.Please help me solve using the quadratic formula: x2 – 7x – 1 = -7

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Question 109252This question is from textbook
: 6.Please help me solve using the quadratic formula:
x2 – 7x – 1 = -7
 This question is from textbook

Answer by edjones(8007)   (Show Source): You can put this solution on YOUR website!
x2 – 7x – 1 = -7
x^2-7x+6=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=25 is greater than zero. That means that there are two solutions: .




Quadratic expression can be factored:

Again, the answer is: 6, 1. Here's your graph:
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