Question

Catherine

（複數）
請問第二小題開頭那個x^5=1的五根是怎麼來的🥲

人才
例題21
,求下列各式的值:
5
27 27
Elo=cos
+isin
w
(1) 010 +0+02 + ... + @155
ws
o
(2)(2–0)(2– 0°)(2-6)(2-0)
o
(3)(1+6)(1+0°)(1+w')(1+0)
10.09=1
解
146
-
I-W
I-W
#
5
(W/(1-Wt 1 (1-6053
" (W)
I SEE R EX
1-60
= |
女12
X = 1 kg 2 tk = 1.w.wr wrot
5.1.
& X= 1 = 17-Dex* x²x²x+1)
X*x*x*X+ 1 hr halt ming (2-6)(X-009 (X-63 (8-64,
=) x-lycx*x*x* x+1)=(932_1-w)(x-w3 (X-whix-65
X-
x =
X**28) 1
4 2 4 2 + 1 = (2-6) (2-² (2-0 (2-) = 3 1#
(-4-W) 1-1-w) (-1-0} (-1-ws
43.