八年级数学上册乘法公式130.docx

1、八年级数学上册乘法公式1301 1 (xy)(xy) (xy10)(xy10) 3 3 (5a6b)(6b5a) (b8)(b8) 6159 202199 (3a4b)2 (x5)2 (m9)2 4022 9982 (p5q)2 (x10)2(x4)2 (2x8y5)(2x8y5)2 (2x3y1)2 (x8)(x8)2 先化简，再求值。(4x5y)2(5x2y)(2x5y),其中x=10,y=-3 1 1 (xy)(xy) (5xy5)(5xy5) 8 8 (3ab)(b3a) (b4)(b4) 9489 702699 (a3)2 (x7y)2 (m6n)2 1032 7982 (p7)2

2、(x1)2(2x4)2 (x5y1)(x5y1)2 (2x3y4)2 (x5)(x5)2 先化简，再求值。(x8)2(5xy)(x5y),其中x=4,y=5 5 5 (xy)(xy) (2xy10)(2xy10) 4 4 (ab)(ba) (b4)(b4) 9189 10499 (3a3b)2 (x4)2 (m9n)2 932 572 (p2q)2 (x2)2(2x6)2 (x8y4)(x8y4)2 (3xy5)2 (x4)(x4)2 先化简，再求值。(x7)2(2x5y)(5x2y),其中x=2,y=3 9 9 (xy)(xy) (xy9)(xy9) 8 8 (6a2b)(2b6a) (6b

3、9)(6b9) 9189 403399 (2a5)2 (x9y)2 (m3)2 80012 972 (4p5q)2 (x8)2(2x1)2 (4xy10)(4xy10)2 (x4y3)2 (3x3)(3x3)2 先化简，再求值。(x8)2(4x5y)(5x4y),其中x=-10,y=-1 6 6 (xy)(xy) (2xy9)(2xy9) 5 5 (ab)(ba) (b9)(b9) 9489 903899 (3a2b)2 (x5)2 (m9n)2 20012 99982 (2p7q)2 (x7)2(x1)2 (4xy9)(4xy9)2 (x5y4)2 (x1)(x1)2 先化简，再求值。(x9

4、)2(x3y)(3xy),其中x=-8,y=3 4 4 (xy)(xy) (4xy5)(4xy5) 5 5 (5ab)(b5a) (b10)(b10) 8179 704699 (3a8b)2 (2x6)2 (2m4n)2 100022 2972 (p2q)2 (x10)2(3x6)2 (xy6)(xy6)2 (3xy5)2 (x9)(x9)2 先化简，再求值。(4x4)2(xy)(xy),其中x=6,y=-1 7 7 (xy)(xy) (xy4)(xy4) 6 6 (4a5b)(5b4a) (4b3)(4b3) 9389 203199 (a6b)2 (4x3)2 (m7n)2 9032 982

5、 (p7q)2 (2x3)2(2x7)2 (3x7y4)(3x7y4)2 (x4y1)2 (3x5)(3x5)2 先化简，再求值。(3x2)2(6x6y)(6x6y),其中x=-6,y=-7 2 2 (xy)(xy) (xy3)(xy3) 3 3 (a5b)(5ba) (4b8)(4b8) 6159 502499 (a8b)2 (2x5)2 (m9)2 932 692 (p6q)2 (2x3)2(x7)2 (xy5)(xy5)2 (xy4)2 (3x5)(3x5)2 先化简，再求值。(x3)2(5xy)(x5y),其中x=-4,y=5 6 6 (xy)(xy) (xy5)(xy5) 7 7 (

6、2ab)(b2a) (5b7)(5b7) 4439 601599 (4a2b)2 (2x7y)2 (4m5n)2 70022 6982 (2p2q)2 (2x7)2(4x3)2 (xy10)(xy10)2 (xy2)2 (x1)(x1)2 先化简，再求值。(x8)2(5x6y)(6x5y),其中x=0,y=11 3 3 (xy)(xy) (2xy4)(2xy4) 2 2 (a6b)(6ba) (b5)(b5) 9389 902899 (a2b)2 (4x3)2 (2m2)2 5012 9982 (p9q)2 (x10)2(x7)2 (4x8y2)(4x8y2)2 (xy5)2 (x3)(x3)2 先化简，再求值。(4x4)2(4xy)(x4y),其中x=8,y=7