math (form 1)

2011-10-11 4:30 am
Simplify the following experssions.
1. (2t)³/6t²
2.(2mn)(-3nr)(4mr)

Represent the following word phrases by algebraic expressions.
1. Add -2 to the product of m and 2n.
2. Rachael has x $2 coins and y $5 coins. After spending $130, how much is left?

回答 (1)

2011-10-11 6:41 am
✔ 最佳答案
1. (2t)³/6t²
= 2³t³ / 6t²
= 4t/3

2. (2mn)(-3nr)(4mr)
= -24m²n²r²
= -24(mnr)²

Represent the following word phrases by algebraic expressions.
1. m x 2n + (-2)
= 2mn - 2

2. 2x + 5y -130



收錄日期: 2021-04-13 18:17:40
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20111010000051KK00751

檢視 Wayback Machine 備份