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1/4x^2y-3x^2+3/4x^2y+2x^2合并同类项

分类: 作业答案 • 2021-12-19 15:52:36

问题描述：

1/4x^2y-3x^2+3/4x^2y+2x^2
合并同类项

答

1/4x^2y-3x^2+3/4x^2y+2x^2
原式=(1/4+3/4)x^2y-x^2
=x^2y-x^2

答

1/4x^2y-3x^2+3/4x^2y+2x^2
=1/4x^2y+3/4x^2y+2x^2-3x^2
=x^2y-x^2