Help...I am trying to solve this problem. Quadratic Formula
9x2-18x+3=0 This is what I have so far. -(18)plus or minus 6 square 6 over 18. This is the way the instructor is teaching us. Can anyone help?

Question

Help...I am trying to solve this problem. Quadratic Formula
9x2-18x+3=0  This is what I have so far.  -(18)plus or minus 6 square 6 over 18. This is the way the instructor is teaching us. Can anyone help?

anonymous · Answer

-(18) $$-(18)\pm 6\sqrt{6} \over 18$$

radar · Answer

$$-3(+ \- )\sqrt{6}$$

anonymous · Answer

Thank you, but how did you get the answer.  Did you divide -18 by 6?

radar · Answer

I divided all terms by 3 then a=3, b=-6, c=1, I messed up using it in the equation.  I will try again:  (b^2-4ac)^1/2 becomes (36-4x3x1)^1/2=(24)^1/2=(4x6)^1/2=2(6)^1/2 now plugging it in it becomes (6+/-2(6)^1/2)/6 so the answer would be

radar · Answer

$$(3=/-\sqrt{6})/3$$

radar · Answer

change that equal sign to a +

radar · Answer

plus or minus the square root of 6