Which of these expressions is in simplified form?

A. a ^3 sqrt 4 - b ^3 sqrt 2 / 2
B. sqrt 1/2x + sqrt 1/2z
C. x^2 - 3x sqrt y / sqrt 3
D. sqrt 125x - x^2

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  1. It is hard to understand what you mean without parentheses but the way I see it A can be simplified since sqrt 4 = 2 and C can be written as x^2-sqrt (3yx^2). So B and D are simplified.

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