试题:
计算: (1)(-2a2b)2•(6ab)÷(-3b2) (2)(x+3y)(x-3y) (3)(2x-1)(3x+2)-6x(x-2) (4)(3x-y)2-(3x+2y)(3x-2y) |
整式的加减乘除混合运算
2016-05-18
答案:
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