1.(b的5次方乘以6b的2次方)÷(3b的2次方乘以b的4次方)
2.4a的3次方b的2次方乘以3ab的5次方
3.3b的2次方a÷6a的2次方b的7次方
4.30m的4次方n的2次方乘以(負12mn的2次方除以4m的3次方n的5次方)
數學題-only4(列明步驟)
2006-10-20 4:34 am
回答 (2)
2006-10-20 4:45 am
✔ 最佳答案
1. (b^5 x 6b²) / (3b² x b^4)= 6b^7 / 3b^6
= 2b
2. 4a³b² (3ab^5)
= 12a^4b^7
3. 3b²a / 6a²b^7
= 1/2 [a^(-1)b^(-5)]
= (1/a)(1/b^5)1/2
= 1/ab^5 (1/2)
= 1/(2ab^5)
4. 30m^4n² (-12mn² / 4m³ n^5)
= 30m^4n²[-3m^(-2)n^(-3)]
= 30m^4n²(1/-3m² 1/n³]
= 30m^4n²(- 1/3m²n³)
= -30m^4n² / 3m²n³
= -10mn^(-1)
= - 1/10mn
參考: me
2006-10-20 4:43 am
1.(b的5次方乘以6b的2次方)÷(3b的2次方乘以b的4次方)
(b^5 x 6b^2)÷(3b^2xb^4)
=6b^7÷3b^6
=2b
2.4a的3次方b的2次方乘以3ab的5次方
(4a^3 b^2)x3ab^5
=12a^4 b^7
(b^5 x 6b^2)÷(3b^2xb^4)
=6b^7÷3b^6
=2b
2.4a的3次方b的2次方乘以3ab的5次方
(4a^3 b^2)x3ab^5
=12a^4 b^7
參考: dfdsfasd
收錄日期: 2021-04-12 20:57:53
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061019000051KK03873