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计算:(ax2y2-a)÷(xy+1)
计算:(ax2y2-a)÷(xy+1)
发布时间:2020-08-04 21:02:01
计算:(ax2y2-a)÷(xy+1)
网友回答
axy-a解析试题分析:先提取公因式a,再根据平方差公式分解因式,最后算除法,即可得到结果。(ax2y2-a)÷(xy+1)= a(x2y2-1)÷(xy+1)= a(xy+1)(xy-1)÷(xy+1)= a(xy-1)= axy-a考点:本题考查的是因式分解的简单应用
点评:
解答本题的关键是熟练掌握平方差公式:a2-b2=(a+b)(a-b).同时注意一个多项式有公因式首先提取公因式.
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