计算:(1)3b216a÷bc2a2?(?2ab)(2)a2?6a+94?b2÷3?a2+b?a23a?9(3)(x2x?2+42?x)(4)3?xx?2÷(5x?2
计算:(1)3b216a÷bc2a2?(?2ab)(2)a2?6a+94?b2÷3?a2+b?a23a?9(3)(x2x?2+42?x)(4)3?xx?2÷(5x?2-x...
计算:(1)3b216a÷bc2a2?(?2ab)(2)a2?6a+94?b2÷3?a2+b?a23a?9(3)(x2x?2+42?x)(4)3?xx?2÷(5x?2-x-2)
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