# math

posted by
**kayla** on
.

x^2-9x-4=6

solve by completing the square

show steps plz :D

Add 4 to both sides. What is 1/2 of -9? Then square that, and add it to both sides.

Now, on the left, you have a perfect square.. (x-9/2). Take the square root of each side. Remember the right side will be +-.