736的平方减364的平方加99.9的平方，怎么算
答案:4 悬赏:20 手机版
解决时间 2021-11-16 21:37
- 提问者网友：欲劫无渡
- 2021-11-16 04:10
736的平方减364的平方加99.9的平方，怎么算
最佳答案
- 五星知识达人网友：雾月
- 2021-11-16 05:26
736^2 - 364^2 = (736+364)*(736-364) = 1100*372 = 409200
409200 + 99.9^2 = 409200 + (100-0.1)^2
= 409200 + (10000-20+0.01)
= 419180.01
409200 + 99.9^2 = 409200 + (100-0.1)^2
= 409200 + (10000-20+0.01)
= 419180.01
全部回答
- 1楼网友：空山清雨
- 2021-11-16 09:04
736的平方-364的平方加99.9的平方=(736+364)x（736-364）+（100-0.1)x(100-0.1)
=1100x372+100x100-2x100x0.1+0.1x0.1
=409200+10000-20+0.01
=419180.01
axa-bxb=(a+b)x(a-b)
(a-b)x(a-b)=axa-2ab+bxb
=1100x372+100x100-2x100x0.1+0.1x0.1
=409200+10000-20+0.01
=419180.01
axa-bxb=(a+b)x(a-b)
(a-b)x(a-b)=axa-2ab+bxb
- 2楼网友：詩光轨車
- 2021-11-16 08:32
736^2-364^2+99.9^2
=(736+364)(736-364)+(100-0.1)^2
=1100×372+10000-20+0.01
=409200+10000-20+0.01
=419180.01.
=(736+364)(736-364)+(100-0.1)^2
=1100×372+10000-20+0.01
=409200+10000-20+0.01
=419180.01.
- 3楼网友：杯酒困英雄
- 2021-11-16 07:06
736²-364²+99.9²
=（736+364）×（736-364）+（100-0.1）²
=1100×372+100²-2×100×0.1+0.1²
=409200+10000-20+0.01
=419180.01
=（736+364）×（736-364）+（100-0.1）²
=1100×372+100²-2×100×0.1+0.1²
=409200+10000-20+0.01
=419180.01
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