作业帮求算[(3x-y²/2)+3y(x-y/12)]/[(2x+y)²-4y(x+y/4)]
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求算[(3x-y²/2)+3y(x-y/12)]/[(2x+y)²-4y(x+y/4)]
求算[(3x-y²/2)+3y(x-y/12)]/[(2x+y)²-4y(x+y/4)]
求算[(3x-y²/2)+3y(x-y/12)]/[(2x+y)²-4y(x+y/4)]
(3x -y^2 /2 +3xy -y^2/4)/(4x^2 +y^2 +4xy -4xy -y^2)
=(3x-3y^2/4 ) / (4x^2)
=