问道数学题:1000²/252²-248²
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/28 08:04:35
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问道数学题:1000²/252²-248²
问道数学题:1000²/252²-248²
问道数学题:1000²/252²-248²
1000²/(252²-248²)
=1000²/[(252+248)(252-248)]
=1000²/(500*4)
=1000²/(1000*2)
=500
1000²/252²-248²=1000²/(252+248)(252-248)=1000²/500×4=1000000/2000=500
1000²/(252²-248²)=1000²/(252×8-2×8)=1000²/2000=500
计算器算一下就好了,等于500