(x+2y)(x2-4y2)(x-2y)
题型:解答题难度:一般来源:不详
(x+2y)(x2-4y2)(x-2y) |
答案
根据平方差公式, (x+2y)(x2-4y2)(x-2y), =(x2-4y2)(x2-4y2), =x4-8x2y2+16y4. |
举一反三
20142-2013×2015的计算结果是______. |
(x-1)(x+1)-1=______,(______-2)(3x______)=4-9x2. |
在(x-y)(x+y)=ax2+bxy-y2中,a= ,b= . |
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