1.c^7d^5 x (-2d^2)^2/c^5 除(3d^4/c^2)3
2. Expand (5x+3)^2
3. using the result in (2) ,find the value of 503^2
急,唔該><><
3題(20點)數學唔該唔該><
2012-10-16 6:34 am
回答 (2)
2012-10-16 6:50 am
✔ 最佳答案
2. Expand (5x+3)^2(5x+3)^2
= 5x^2+2(5x)(3)+3^2
= (25x)^2+30x+9
3. using the result in (2) ,find the value of 503^2
503^2
= (500)^2+2(500)(3)+(3)^2
= 250000+3000+9
= 253009
參考: me
2012-10-16 7:04 am
1. (4c^8)/(27d^3)
2. 25x^2 + 30x + 9
3. 503^2
=(5*100+3)^2
=25(100)^2 + 30(100) + 9
=253009
2. 25x^2 + 30x + 9
3. 503^2
=(5*100+3)^2
=25(100)^2 + 30(100) + 9
=253009
參考: me^^
收錄日期: 2021-04-13 19:03:04
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20121015000051KK00670