北师大版七年级数学下册整式的加减法计算题精选 258.docx

1、北师大版七年级数学下册整式的加减法计算题精选 258 x2(2x29x6)(9x2) 9y2(4x2y)(7x23y2) 1(5x22xyx)(4x29xy5x) 3 1 1(xy y22)(x2xy9y27) 5 4 4 1(xyy)(xyx8) 3 8 (6y7x9z2)(5y9x8z2) (9k24k)(5k22k2) ( a24a4b)(2a24a9b) 8x2(9x26x7)(7x1) 8y2(6x2y)( x26y2) 7(3x28xyx)(8x22xy3x) 8 6 4(xy2y27)(x2xy8y27) 5 3 8 1(xyy)(xyx2) 7 5 (8y x4z2)(5y7x

2、6z2) (4k29k)(6k27k1) ( a25a3b)(4a23a8b) x2(7x24x4)(5x4) 8y2(8x2y)(7x29y2) 1(2x23xyx)(7x25xy7x) 4 6 7(xy3y25)(x2xy8y26) 7 6 1 1(xyy)(xyx8) 3 5 (6y6x2z2)(8y7x5z2) (7k23k)(6k28k8) (2a26a2b)(6a25a2b) 8x2(3x23x8)(9x6) 7y2(3x2y)( x26y2) 8(7x2 xyx)(6x23xy5x) 7 7 1(xy9y22)(x2xy y25) 8 5 7 1(xyy)(xyx4) 6 3 (

3、2y7x5z2)(3y3x9z2) ( k27k)(3k22k5) (3a27a b)(6a28a2b) 2x2(4x2 x5)(3x2) 2y2(3x2y)( x25y2) 8(6x24xyx)(2x27xy4x) 7 4 1(xy3y21)(x2xy4y22) 5 5 1 9(xyy)(xyx4) 7 8 (6y6x8z2)(4y8x9z2) (3k24k)(6k27k5) (4a28a9b)(6a26a3b) 8x2(3x2 x4)(7x2) 4y2(7x2y)(9x28y2) 5(4x26xyx)(7x22xy3x) 6 1 1(xy4y28)(x2xy9y21) 7 6 1 1(xyy)(xyx7) 5 6