6 x 3=2 x 9
9×9×9×9×7×7×7×8+6×6×6×6×3×3×3×3
=9×9×9×9×7×7×7x8 +9x9x9x9x2x2x2x2
=9x9x9x9x(7x7+2x2x2x2)
=81 x 84 x 65
=442260
简便方法计算!9×9×9×9×7×7×7×8+6×6×6×6×3×3×3×3
简便方法计算!9×9×9×9×7×7×7×8+6×6×6×6×3×3×3×3
数学人气：148 ℃时间：2019-11-10 10:48:51
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