计算:205乘以195-103乘以97

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计算:205乘以195-103乘以97计算:205乘以195-103乘以97计算:205乘以195-103乘以97205乘以195-103乘以97=(200+5)(200-5)-(100+3)(100

计算:205乘以195-103乘以97
计算:205乘以195-103乘以97

计算:205乘以195-103乘以97
205乘以195-103乘以97
=(200+5)(200-5)-(100+3)(100-3)
=200x200-5x5-100x100+3x3
=40000-25-10000+9
=30000-16
=29984

205乘以195-103乘以97
=(200+5)(200-5)-(100+3)(100-3)
=200²-5²-100²+3²
=40000-25-10000+9
=29984

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205×195-103×97
=(200+5)(200-5)-(100+3)(100-3)
=200²-5²-(100²-3²)
=40000-25-10000+9
=30000-16
=29984