因式分解练习题(平方差公式)姓名 班级 1. x216 (2)x2+y2 (3)64a2 (4)4x29y2 (5) 3625x2 (6) 16a29b2 (7)m2(8)(xp)2(xq)2 (9)16(mn)29(mn)2 (10)9x2(x2y) 2 (11)4a216 (12)a5a3 (13)x4y4 (14)32a350ab2 (15)16) (17) (18) (19) (4) (5) (6) (7) (8) (9) (10) (11)3625x2 16a29b2 (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) (x+y)2(xy)2(9) (10)(1)a2-144b2 (2)R2-r2 (3)-x4+x2y2 (4) 16x2-25y2(5) (a+m)2-(a+n)2 (6) 75a3b5-25a2b4(7)3(a+b)2-27c2 (8)16(x+y)2-25(x-y)2(9)a2(a-b)+b2(b-a) (10)(5m2+3n2)2-(3m2+5n2)2