i got the wrong answer... where did i go wrong?
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Hint: You need to square both terms before adding them together (and finishing off by taking the square root). (x/2)^2 = x^2/4 for example.
i did what you said but im more off now
(x/2)^2 + (x-1/4)^2
= x^2/4 + (x^2 - 2x + 1)/16
= 4x^2/16 + (x^2 - 2x + 1)/16
= (5x^2 - 2x + 1)/16
Taking the square root of that gives us
SQRT(5x^2 - 2x + 1)/4
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