x
次の方程式を解け。
2x3+
(1) (x-1)(x+1)(2x-1)=0
°(3) x³-2x+1=0
(5) 2x³-3x²+1=0
(7) x-5x-6x2=0
(1) 24=1,-1,-2
°(2) (x-2)(x²+2)=0
(4) x³-x²+x-1=0
°(6) 2x3+5x²+x-2=0
°(8) x-3x²-6x+8=0
(2) x³-4-0 4-2-4=0
(6-4×1)x3-47
(x-4)(x+4x+1)-02-45x3
x²+4x+1
-4
(3)
4x²-4
x²+x-1
11-2x1+1=1-2+1=0
(X-1)(7-1)=0
X-11-2x+1
1)×3-1׳
x+4x+1=00
X=-41√43-4x1x1
+4x³-16x
x²+12=0
76x-4
X-2=0) x=-20
2
e=I√-Zi
-x³ +1
x=
-415-12
-45i 16x-4
0
2
x=-4±2531
2,1√2
1-1+1-11-1+1-1=0
(x-1)(x²+1)=0
xti
(5)
-2
2-3+1
272-7-1
(...
... 2×1³ - 3x1² + 1 = 2x 1-3x1+1=0
x-12x²³-3x²+1
(x-1)(2x^-x-1)=0
-2x³-27
(x-1)(x-1) (2x+1)=0
-x²+
2解
-x²I
x²-x+1
7-x11
(4)
(61-12(-1)+5(-1)+(-1)-2 = −2+5+2=0
(x+1)(2x²+3x-2)=0
(x+1)(2x-1)(x+2)=0
x= €. 1
(8)24-3x²-6x+8=0
G-1)(x²-2x-8)=0
(x-1)(x-2)(x+3x+4)=0
13±√21
x=1,2,
2
(71 -5x-6x=0
x(x+1)(x-6)=0
401.6
2自体