Please use " ^ " to indicate exponentiation:
x^2 = 9x + 6
Rewrite that in standard form: x^2 - 9x - 6 = 0
Solve by completing the square:
x^2 - 9x + (-9/2)^2 - (-9/2)^2 - 6 = 0
(x-9/2)^2 -(-9/2)^2 - 6 = 0, or (x-9/2)^2 -81/4 - 24/4 = 0
(x-9/2)^2 -105/4 = 0, or (x-9/2)^2 = 105/4
x-9/2 = plus or minus sqrt(105/4), or x = 9/2 plus or minus sqrt(105)/2
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