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BSF James · 19-05-2008, 09:16 PM

I got (for the original equation):

5x-1=2x² +1
-2 = 2x² -5x
2x² -5x = -2
(2x -1)(x-2) = 0

if 2x-1 = 0
then
2x =1
x = 0.5

if x-2 = 0
then
x=2

so x = 2 or 0.5

I think thats right. I'm ashamed how rusty I am though. I aced GCSE and A level maths, then did very advanced maths in my engineering degree but I really dont remember any of it. I must have killed too many brain cells with guinness back then...

19-05-2008, 09:16 PM	#28 (permalink)
BSF James UK-Muscle Sponsor Join Date: Sep 2003 Location: Telford Posts: 1,259	Re: GCSE Maths - Really need help I got (for the original equation): 5x-1=2x² +1 -2 = 2x² -5x 2x² -5x = -2 (2x -1)(x-2) = 0 if 2x-1 = 0 then 2x =1 x = 0.5 if x-2 = 0 then x=2 so x = 2 or 0.5 I think thats right. I'm ashamed how rusty I am though. I aced GCSE and A level maths, then did very advanced maths in my engineering degree but I really dont remember any of it. I must have killed too many brain cells with guinness back then...