八年级数学上册乘法公式108.docx

1、八年级数学上册乘法公式1084 4 (xy)(xy) (xy2)(xy2) 5 5 (4ab)(b4a) (b2)(b2) 5449 10299 (4a3)2 (x9)2 (m4n)2 612 892 (p4q)2 (3x6)2(2x7)2 (2x7y2)(2x7y2)2 (xy2)2 (x9)(x9)2 先化简，再求值。(x3)2(xy)(xy),其中x=-8,y=3 3 3 (xy)(xy) (4xy7)(4xy7) 2 2 (ab)(ba) (b7)(b7) 4139 304299 (2a8b)2 (x3)2 (2m4)2 90022 79982 (4p8)2 (x1)2(2x1)2 (

2、4x7y3)(4x7y3)2 (x4y2)2 (x3)(x3)2 先化简，再求值。(4x5)2(6x6y)(6x6y),其中x=-10,y=5 1 1 (xy)(xy) (xy3)(xy3) 8 8 (a2b)(2ba) (b9)(b9) 9289 603599 (3a5)2 (3x4)2 (m6)2 212 2972 (4p9)2 (3x7)2(2x7)2 (3x7y6)(3x7y6)2 (x3y1)2 (3x9)(3x9)2 先化简，再求值。(x2y)2(xy)(xy),其中x=8,y=11 9 9 (xy)(xy) (5xy4)(5xy4) 8 8 (ab)(ba) (2b9)(2b9)

3、 6459 202199 (3a4b)2 (x5)2 (4m2)2 1012 3992 (4p4q)2 (x2)2(2x10)2 (xy7)(xy7)2 (xy5)2 (2x5)(2x5)2 先化简，再求值。(x7)2(6x6y)(6x6y),其中x=-6,y=-5 6 6 (xy)(xy) (2xy2)(2xy2) 7 7 (6a3b)(3b6a) (b8)(b8) 8479 903899 (3a4b)2 (x4)2 (m6)2 60032 3982 (p7)2 (x2)2(3x3)2 (2x6y10)(2x6y10)2 (x5y2)2 (x2)(x2)2 先化简，再求值。(x4)2(x5y

4、)(5xy),其中x=-2,y=1 1 1 (xy)(xy) (xy1)(xy1) 4 4 (3ab)(b3a) (6b8)(6b8) 8379 503499 (a6b)2 (3x3y)2 (4m6)2 40012 172 (p2)2 (x5)2(x10)2 (4x6y8)(4x6y8)2 (4xy4)2 (3x2)(3x2)2 先化简，再求值。(2x7)2(xy)(xy),其中x=-8,y=-9 5 5 (xy)(xy) (4xy4)(4xy4) 4 4 (5ab)(b5a) (b9)(b9) 7369 704699 (2a6)2 (x4y)2 (m3n)2 332 3972 (p2)2 (

5、x10)2(3x7)2 (2xy4)(2xy4)2 (x4y2)2 (4x2)(4x2)2 先化简，再求值。(x9y)2(6x5y)(5x6y),其中x=4,y=-3 4 4 (xy)(xy) (5xy3)(5xy3) 3 3 (3ab)(b3a) (b1)(b1) 4339 10299 (a7)2 (x5)2 (m3n)2 212 7992 (4p3q)2 (2x6)2(3x2)2 (3xy4)(3xy4)2 (xy4)2 (x6)(x6)2 先化简，再求值。(4x8y)2(xy)(xy),其中x=-4,y=1 1 1 (xy)(xy) (4xy1)(4xy1) 2 2 (2a4b)(4b2

6、a) (6b5)(6b5) 3329 801799 (3a9b)2 (x8)2 (m3n)2 7032 89982 (3p5q)2 (x3)2(3x10)2 (xy9)(xy9)2 (2x4y3)2 (x7)(x7)2 先化简，再求值。(3x6)2(xy)(xy),其中x=-2,y=-7 8 8 (xy)(xy) (5xy9)(5xy9) 7 7 (6a4b)(4b6a) (b10)(b10) 8179 404399 (a7)2 (x7)2 (2m3n)2 9022 59992 (4p3q)2 (3x7)2(3x5)2 (xy10)(xy10)2 (4x2y1)2 (x9)(x9)2 先化简，再求值。(x4)2(2xy)(x2y),其中x=-10,y=11