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因式分解练习题1、(1)3mx-6my (2)x2y+xy2 (3)12a2b38a3b216ab4(4)3x2-6xy+x (5)-24x3 12x2 +28x (6)2a(y-z)-3b(z-y)2、(1) 36x2 (2) a2b2 (3) x216y2(4) x2y2z2 (5) (x+2)29 (6)(x+a)2(y+b)2(7) 25(a+b)24(ab)2 (8)0.25(x+y)20.81(xy)23、(1)a24a4 (2)a212ab36b2 (3)25x210xyy2(4)16a48a21 (5) (mn)24(mn)4 (6) 16a48a214、5、6、(1)18a250 (2)2x2y8xy8y (3)a2(xy)b2(xy)(5)a416 (6)81x472x2y216y4 (7)(a2b2)24a2b2 (8) (9)a42a2b2b4 (10)2xyx2y2 (11)3ax26axy3ay2 (12) (13)(x22y)2(12y)2(14)x42x21 (15)x48x2y216y4 (16)80a2(ab)45b2(ab) (17)16a424a2b29b4 (18)(xy)210(xy)25(20)4m29n24m+1 (21)3a2+bc3ac-ab (22)(xy)(xy1)121