Question

一一ㄑ

算式這樣有寫錯嗎～

答:
ZA (4n-8)
1 = 240x9
82
n
9.
8n²-36n+72=0Tc
3 h² = 9 n + 18 = 0
1.石頭甲從塔頂處自由落下的瞬間,另一石頭乙由塔頂下方21m處亦自由落下
xm
結果兩石頭同時著地,求塔高若干?
H
17m
21 m
g
-
2CH-

14.
2
H
JH-1m 94-21 m
2x14
2(H-21)
6
VZH-SZXX4=JZCH-21)
(√H-√14-(√M=21)
H-2V14H+14=1A-21
Fo4 35 = WITH
1225=56H
35=214H