初中数学整式的加减法专项练习题30.docx

1、初中数学整式的加减法专项练习题30 x2(2x27x4)(3x4) y2(4x2y)(7x22y2) 1( x28xyx)(6x27xy x) 8 6 5(xy y21)(x2xy8y27) 7 6 1 1(xyy)(xyx7) 5 6 (4y3x9z2)(6y5x7z2) (9k26k)(4k26k3) (6a23a6b)(7a22a6b) 7x2(4x24x6)(2x9) 6y2( x2y)(9x24y2) 6(7x22xyx)(6x2 xy x) 5 1 6(xy2y25)(x2xy6y24) 7 5 8 1(xyy)(xyx3) 7 7 (3y8x2z2)( y8x8z2) (7k26

2、k)(3k22k5) (5a22a5b)(6a2 a9b) 5x2(5x22x7)(2x5) 2y2( x2y)(2x2 y2) 4(6x26xyx)(8x26xy x) 3 1 7(xy4y22)(x2xy2y28) 7 8 1 5(xyy)(xyx1) 7 6 (7y7x6z2)(9y2x5z2) (6k22k)(4k22k5) ( a23a3b)(9a22a2b) 3x2(9x29x2)( x9) 2y2(5x2y)(3x22y2) 4(3x2 xyx)( x29xy5x) 3 9 1(xy7y22)(x2xy7y21) 8 3 1 1(xyy)(xyx2) 8 7 (7y6x4z2)(

3、5y9x5z2) (9k23k)(7k26k1) (5a22a9b)(5a24a8b) x2(2x23x3)(9x9) 2y2(6x2y)(8x27y2) 1( x28xyx)( x23xy x) 4 1 4(xy3y27)(x2xy8y25) 4 3 1 7(xyy)(xyx3) 8 8 ( y7x3z2)(6y x4z2) (7k25k)(5k27k4) (4a24a b)( a25a5b) 9x2(8x29x1)(8x4) y2(7x2y)(9x29y2) 2(5x27xyx)(3x24xy3x) 3 5 1(xy4y23)(x2xy4y26) 4 7 1 1(xyy)(xyx9) 3 8 ( y4x6z2)(5y x2z2) (6k2 k)(7k26k5) (4a29a8b)(7a25a6b) 2x2(6x22x8)(4x3) 8y2(5x2y)(5x26y2)