SOLUTION: Hello, Please help me solve this equation: Give the exact and approximate solutions to three decimal places. {{{y^2-16y+64=1}}}

Question 582057: Hello,
Please help me solve this equation:
Give the exact and approximate solutions to three decimal places.

Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Give the exact and approximate solutions to three decimal places.

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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=4 is greater than zero. That means that there are two solutions: .

Quadratic expression can be factored:

Again, the answer is: 9, 7. Here's your graph:

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