(4x-2y²)-[5x-x+y²]-x 化简!
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(4x-2y²)-[5x-x+y²]-x 化简!
(4x-2y²)-[5x-x+y²]-x 化简!
(4x-2y²)-[5x-x+y²]-x 化简!
(4x-2y²)-[5x-x+y²]-x
=4x-2y²-5x+x-y²-x
=-x-3y²
(4x-2y²)-[5x-x+y²]-x 化简!
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