Question

V٩۹(๑•̀ω•́ ๑)۶

第3，4題 不會 (ノДＴ)
謝謝!!（題後有答案）

(t + ) (1-2)
+ 3,2
ax 2x + a)-b brutal - Cox-b) (byte)
1. x² + 3x = 4 = x=1 -4
3x92-1220
X-4
課後作業
因式分解
abxta x-px- ab
1.Vabx? +(a? -62)x - ab
[(ax - b)(bx +a)]
2.
)2
[(x+5)(x+1)(x-2)(x-6)]
3. (xy-1)+ (x + y)(xy+1) + 5xy
[(xy+x+1)(xy + y +1) 1
4. 3x2 + 5xy – 2y2+x+9y-4
[(3x-y+4)(x+2y-1)]
5.V x’(y – z)+ y? (z - x)-z-+yzwy(x+y) - 8(x+y) CX-Y)
[(x - y)(xy - xz - yz)]
79-42 Tory-ty) - 67-964-2X-2
6. **+5x²y2 +9y* hint : [(x2)* +6x?y? +(3y~)]- (xv)" [(x² + xy +3y?)(x² - xy + 3y?)
ayx+2y-my)
7. x² - xy
[x(x+y)(x-y)(x2 + xy+y)(x2 - xy+y2
x +4
[(x+2)(x - 2)(x-1)(x²+x+1
427) (-1)
[(ab - 1)(a’b? + 2ab +
lab-1) (ab+ 2ab +2)
10. x(x-1)-1-1)+ xy(x - y)
[(x - y)(x + y +1)(x + y
370-
-D
B. 33 x + X-A
線方程式
(A-
2A-12)+74=0
(X2
x3-
9. a'B'+a*b*-2 hint : [(ab) -1]+[(ab) - 1] Ob) + b + i)+ Elab-bas