matgre Posted January 20, 2011 Share Posted January 20, 2011 Hello! Im new here so and in a hurry so I don't know if I'm posting at the right place but anyway here's my pickle! I'm trying to isolate y in this equation: (y^2) - 4y +10 = P anyone care to hint me ? I tried decomposition but it was in vain heheheeeeeeeee THanks! Link to comment Share on other sites More sharing options...
timo Posted January 20, 2011 Share Posted January 20, 2011 (edited) EDIT: Sorry; I mis-read your equation. I am not completely sure that you want to isolate y, so I'll give you two options of what can be a sensible thing to do. 1) Solve for y -> quadratic formula. 2) Rearrange (y-something)^2 = something else. -> completing the square. Edited January 20, 2011 by timo Link to comment Share on other sites More sharing options...
matgre Posted January 20, 2011 Author Share Posted January 20, 2011 (edited) Hmm Im not sure I understand option 2 but solving y with the quad formula should work. I would have to treat (10-P) as my constant C and solve for y! That should do the trick!? Edited January 20, 2011 by matgre Link to comment Share on other sites More sharing options...
timo Posted January 20, 2011 Share Posted January 20, 2011 ^^ my original reply was crap since I mis-read your equation (didn't see that 4y has a "y" in it...). Sorry about that. See the now-modified post. Link to comment Share on other sites More sharing options...
matgre Posted January 20, 2011 Author Share Posted January 20, 2011 All good thanks! Link to comment Share on other sites More sharing options...
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