作业帮[(2X+Y)*(2X+Y)-Y(Y+4X)]/2X 怎么算?
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[(2X+Y)*(2X+Y)-Y(Y+4X)]/2X 怎么算?
[(2X+Y)*(2X+Y)-Y(Y+4X)]/2X 怎么算?
[(2X+Y)*(2X+Y)-Y(Y+4X)]/2X 怎么算?
[(2X+Y)*(2X+Y)-Y(Y+4X)]/2X
=(4x2(平方)+4xy+y2-y2-4xy)/2x
=4x2/2x
=2x