新人教版八年级数学上册第14章整式的乘法计算专题
14.114.2整式乘法运算题 一、干脆写出答案。 (1)x2x3 (2)aa6 (3)- x5x3x10 (4)mx-2m2-x (5)10 x1000 (6)(-2)(-2)5(-2)5 (7)(103)6 (8)(a4)2 (9)(am)10 (10)-(x4)5 (11)(a2)3a5 (12)-(-x2)2 (13)(2a)2 (14)(-5b)3 (15)(x2y)3 (16)(-3m2)3 (17)(2ab2)3 (18)-(x2y3z5)2 (19)-8m2n33m4n5 (20)3x2(-6xy2) (21)(-5a2b)(-4a) (22)3x26x2 (23)4y(-2xy2) (24) (-3x)25x3 (25)x8 x3 (26)(ab)5(ab)2 (27)(-a)12(-a)5 (28)m8m2 (29)(xy)6(xy)3 (30)n7(-n5) (31)-8a2b3 6ab2 (32)(6109)(2105) (33)(4103)(5105) (34)_____-4b_____4b9a2-16b2 (35)_____-2x_____-2x4x2-25y2 二、计算(请写出过程) 1.a2-a5-3a3 2.[amn]p 3.-mn2-m2n3 4.-3ab-a2c6ab2 5.-ab3-a2b-a2b4c2 6. -4a2a23a-1 7. -2ab233a2b-2ab-4b2 8.3m-nm-2n. 9.x2y5a3b. 10.5xx22x1-2x3x-5 11. -ab2(3a2b–abc-1) 12. 13.(12x2-10 xy2)4xy 14. 7m(4m2p)27m2 15. 16.(2x+2)(2x-2) 17.(a3b)(a-3b) 18. -2x-52x-5 19.(-2x3)2 20. 982 21.(3x-5)2 - (2x3)2 22. a-5 2-a6a-6 23. 2x-3y3y2x-4y-3x3x4y 24. 32x12x-1-23x22-3x 25. xyx-yx2y2 26. 27. 28. 29. ,其中 30.(2x+3y)2-(2x+y)(2x-y),其中x1,y2 第 2 页