阅读下列材料:1×2=(1×2×3-0×1×2), 2×3=(2×3×4-1×2×3), 3×4=(3

阅读下列材料:1×2(1×2×30×1×2)

2×3(2×3×41×2×3)

3×4(3×4×52×3×4)

由以上三个等式相加,可得

1×22×33×4×3×4×520.

读完以上材料,请你计算下列各题:

(1)1×22×33×410×11(写出过程)

(2)1×22×33×4n×(n1)________

(3)1×2×32×3×43×4×5________.

答案

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