计算:(1)(x3?x5)÷x2(2)(-2x4)3+3x4?(-x)8(3)6x(x-3y2)(4)(2x-3)(4-x)(5)(?2)2×
计算:(1)(x3?x5)÷x2(2)(-2x4)3+3x4?(-x)8(3)6x(x-3y2)(4)(2x-3)(4-x)(5)(?2)2×50?(12)?2...
计算:(1)(x3?x5)÷x2(2)(-2x4)3+3x4?(-x)8(3)6x(x-3y2)(4)(2x-3)(4-x)(5)(?2)2×50?(12)?2
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