My problem is sqrt x+20 =x I put x^2 +400 =x^2 What do I do next?
F FMMurphy Junior Member Joined Mar 12, 2006 Messages 51 Apr 9, 2007 #1 My problem is sqrt x+20 =x I put x^2 +400 =x^2 What do I do next?
D Denis Senior Member Joined Feb 17, 2004 Messages 1,707 Apr 10, 2007 #2 Re: solve sqrt problem FMMurphy said: My problem is sqrt x+20 =x I put x^2 +400 =x^2 What do I do next? Click to expand... Did you miss classes, Murph? Post those like this: sqrt(x + 20) = x squaring both sides gives: x + 20 = x^2 If you don't know what to do next, only your teacher can help.
Re: solve sqrt problem FMMurphy said: My problem is sqrt x+20 =x I put x^2 +400 =x^2 What do I do next? Click to expand... Did you miss classes, Murph? Post those like this: sqrt(x + 20) = x squaring both sides gives: x + 20 = x^2 If you don't know what to do next, only your teacher can help.
M morson Full Member Joined Apr 12, 2007 Messages 263 Apr 12, 2007 #3 But remember that while there are 2 solutions to that resulting quadratic, only one solution is valid.
But remember that while there are 2 solutions to that resulting quadratic, only one solution is valid.
