初二数学乘法公式与因式分解...……*&&￥%@@&@%#%@&*&%￥#@#……&之类的题,
比如（聚几个经典点的题型）：
计算题!
（M^3+5N）(5N-M^3)
（2A+B）^2-（B-2A）^2
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(3A-2B)(3A+2B)(9A^2+4B^2)
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(2M+N)^2(2M-N)^2
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(X-Y+Z)^2
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分解因式：
-2a^3+12a^2-18a
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m^4-16n^4
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(X+Y)^2-4(X+Y-1)
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4A^2B^2-(A^2+B^2)^2
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等等,如果有其它类型也要,只要是解题思路稍有不一样的就要