Simple Polynomials?
回答 (1)
2015-10-11 8:56 pm
✔ 最佳答案
向上移動2a-3線條與a-2線條連接Lx = (a-2) + (2a-3) = 3a - 5
同樣的方法: 中間線條向右移動與右側線條連接
形成一ㄍ長方形 它的周圍長度不變
P(a) = 2*(Lx + Ly)
= 2*[(3a-5) + (3a+1)]
= 2*(6a-4)
= 4*(3a-2)
P(3) = 4*(9-2) = 28
收錄日期: 2021-04-18 13:55:30
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20151011052838AAAFphu