北师大版七年级数学下册整式的加减法计算题精选 372.docx

1、北师大版七年级数学下册整式的加减法计算题精选 372 1(5x22xyx)(7x28xy7x) 5 9 1(xy8y26)(x2xy4y25) 8 8 4 1(xyy)(xyx2) 5 3 (6y8x z2)( y4x3z2) (5k23k)(2k24k6) (4a23a6b)(9a28a7b) 6x2(3x24x7)(5x8) 8y2(6x2y)(7x25y2) 4(6x2 xyx)(9x2 xy3x) 5 9 1(xy2y25)(x2xy7y23) 8 7 4 3(xyy)(xyx8) 5 4 (9y7x6z2)(8y3x2z2) (6k28k)(4k23k1) (7a23a b)(5a2

2、3a7b) 7x2(7x2 x7)(8x6) 2y2(2x2y)(3x26y2) 1(5x22xyx)(6x22xy6x) 7 4 1(xy8y29)(x2xy9y23) 3 6 3 1(xyy)(xyx1) 4 4 (2y2x2z2)(4y7x2z2) (6k29k)(4k2 k5) (6a22a2b)(5a27a9b) 5x2( x23x1)(9x7) 7y2(3x2y)(4x26y2) 1(6x26xyx)(5x29xy4x) 8 3 4(xy5y29)(x2xy4y26) 4 3 3 6(xyy)(xyx2) 4 5 ( y5x9z2)(3y x6z2) (8k22k)(5k22k8)

3、 (4a26a5b)(3a23a b) 2x2(6x23x3)(7x7) 2y2(5x2y)(4x24y2) 8(3x29xyx)(5x26xy8x) 7 4 1(xy5y27)(x2xy5y21) 3 3 6 1(xyy)(xyx1) 7 7 (2y3x5z2)(6y7x9z2) (6k26k)(7k2 k2) (6a28a4b)(8a23a9b) 8x2(9x23x6)(4x3) 6y2(2x2y)(5x2 y2) 1(7x29xyx)(7x22xy7x) 4 1 1(xy7y26)(x2xy5y27) 3 5 3 4(xyy)(xyx7) 4 3 (8y6x2z2)(2y3x3z2) (3k23k)(8k28k4)