SOLUTION: Solve using the quadratic formula: x squared= 8x-16 I am really confused, because this doesn't really follow the formula. Thanks in advance!! :)

Question 196637This question is from textbook Prentice Hall Algebra 1
: Solve using the quadratic formula:
x squared= 8x-16
I am really confused, because this doesn't really follow the formula.
Thanks in advance!! :) This question is from textbook Prentice Hall Algebra 1

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given equation.

Subtract 8x from both sides.

Add 16 to both sides.

Notice we have a quadratic in the form of where , , and

Let's use the quadratic formula to solve for x

Start with the quadratic formula

Plug in , , and

Negate to get .

Square to get .

Multiply to get

Subtract from to get

Multiply and to get .

Take the square root of to get .

or Break up the expression.

or Combine like terms.

or Simplify.

So the answer is (with a multiplicity of 2)

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