2.03×4.06怎么巧算?
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计算如下纤弯链:闹颂
2.03×4.06
=2.03×2.03×2
=2.03²×2
=(2+0.03)²×2
=(2²毁孙+2×2×0.03+0.03²)×2
=(4+0.12+0.0009)×2
=4.1209×2
=8.2418
2.03×4.06
=2.03×2.03×2
=2.03²×2
=(2+0.03)²×2
=(2²毁孙+2×2×0.03+0.03²)×2
=(4+0.12+0.0009)×2
=4.1209×2
=8.2418
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