(4x*2-y*2)除以4x*2-4xy+y*2\2x-y
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![(4x*2-y*2)除以4x*2-4xy+y*2\2x-y](/uploads/image/z/14059509-69-9.jpg?t=%EF%BC%884x%2A2-y%2A2%EF%BC%89%E9%99%A4%E4%BB%A54x%2A2-4xy%2By%2A2%5C2x-y)
(4x*2-y*2)除以4x*2-4xy+y*2\2x-y
(4x*2-y*2)除以4x*2-4xy+y*2\2x-y
(4x*2-y*2)除以4x*2-4xy+y*2\2x-y
原式=(2x+y)(2x-y)/[(2x-y)^2/(2x-y)]
=(2x+y)(2x-y)/(2x-y)
=2x+y
(4x*2-y*2)÷(4x*2-4xy+y*2)\(2x-y)
=(2x+y)(2x-y)*(2x-y)/(2x-y)²
=2x+y