(48x3y4-16xy2)÷16xy2•(3x2y2+1)
题型:解答题难度:一般来源:不详
(48x3y4-16xy2)÷16xy2•(3x2y2+1) |
答案
原式=(3x2y2-1)(3x2y2+1) =9x4y4-1. |
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