Question

默

求第10解

(B)2x – 3y +3= 0 (C)2x – 3y + 4 = 0 (D) 2x – 3y +6=0 6-12 = -6
5x-1 A B
10.()若
,則24-B=? (A)-1 (B)1 (C)4 (D)7
(
(x + 1)(x - 2) x+1
x-2
of 4, 2) = (x-2, Y+3 x=6 y=-|
11. (C) EZ A(-1,2), B(3,4),C(2, -3), D(x, y) ABIICDH I x - 2y = ? (A4 (B
+
>

Answer 1

Catherine

如圖～

Answer 2

綾

由右式推成左式
右式=A(x-2)+B(x+1)/(x+1)(x-2)
=>(A+B)x+(-2A+B)=5x-1
=>2A-B=1