S sai New member Joined May 21, 2006 Messages 4 May 27, 2006 #1 I am trying to solve the following equation please tell if I am on the right track. Problem x^3-9x=0 (x^3-9x)=0 x(x^2-9)=0 x(x-3)(x+3)=0 x=0//x-3=0//x+3=0 +3 +3 -3 -3 x=3 x=-3 Answer x= 3, -3
I am trying to solve the following equation please tell if I am on the right track. Problem x^3-9x=0 (x^3-9x)=0 x(x^2-9)=0 x(x-3)(x+3)=0 x=0//x-3=0//x+3=0 +3 +3 -3 -3 x=3 x=-3 Answer x= 3, -3
stapel Super Moderator Staff member Joined Feb 4, 2004 Messages 16,550 May 27, 2006 #2 What happened to "x = 0"? Eliz.
S sai New member Joined May 21, 2006 Messages 4 May 28, 2006 #3 Solving equations I am not sure. What did I do wrong?
stapel Super Moderator Staff member Joined Feb 4, 2004 Messages 16,550 May 28, 2006 #4 Re: Solving equations sai said: What did I do wrong? Click to expand... Look back in your steps. You had three factors at one point. One of them disappeared, taking a solution with it. Eliz.
Re: Solving equations sai said: What did I do wrong? Click to expand... Look back in your steps. You had three factors at one point. One of them disappeared, taking a solution with it. Eliz.
