SOLUTION: show that (5+4√x)squared /2x = 25/2 x^-1 +Px^ -1/2 + Q
i can simplify the brackets into (25+ 40√x+16x)/2x but in the mark scheme they get the same brackets but ins
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Question 1047243: show that (5+4√x)squared /2x = 25/2 x^-1 +Px^ -1/2 + Q
i can simplify the brackets into (25+ 40√x+16x)/2x but in the mark scheme they get the same brackets but instead of dividing by 2x they write 1/2 x to the power of -1(25+40rootx+16x) why do they times the brackets by a half x to the power of -1
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Because they are equivalent values. 
John
My calculator said it, I believe it, that settles it
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