SOLUTION: Solve by completing the square. x^2-6x-4=0

Question 969850: Solve by completing the square. x^2-6x-4=0
Found 2 solutions by erica65404, josmiceli:
Answer by erica65404(394) (Show Source): You can put this solution on YOUR website!

The first thing you want to do when completing the square is find b.
can be used to find b in a trinomial.
when you look at the equation you were given you can see that b = -6.
now take the absolute value of b which would be 6 and divide it by 2.
This gives you 3.
Then square this number.
This gives you 9.
add 9 to each side of the equation

This part of the equation can be factored into
This is the same as .
now you have the equation
Solve for x

The answers are and
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!

Add to both sides

Take of the coefficient of The
term, square it, and add it to both sides
----------------------------

Take the square root of both sides

And also, taking the negative square root,

---------------------
check answer:

OK
You can check

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