北师大版七年级数学下册整式的加减法计算题精选 121.docx

1、北师大版七年级数学下册整式的加减法计算题精选 1214 6(xy9y24)(x2xy2y24) 5 7 7 8(xyy)(xyx3) 8 7 (6y5x8z2)(8y4x7z2) ( k25k)(2k24k8) (8a23a7b)(4a2 a b) x2( x25x9)(7x4) 6y2(4x2y)(2x22y2) 9(8x27xyx)(6x23xy8x) 8 4 1(xy y27)(x2xy7y29) 3 3 5 1(xyy)(xyx6) 4 3 (7y9x4z2)( y x4z2) (5k27k)(3k29k5) (7a29a9b)(6a28a6b) 7x2(6x27x1)(2x3) 4y

2、2(2x2y)(9x29y2) 6(9x2 xyx)(6x24xy2x) 5 4 6(xy5y23)(x2xy y28) 5 5 1 4(xyy)(xyx3) 6 3 (7y3x8z2)(3y x7z2) (3k24k)(2k24k3) (3a24a2b)(3a22a2b) 2x2(3x23x8)(2x2) y2(3x2y)(3x22y2) 6(5x2 xyx)(8x29xy2x) 5 6 7(xy3y21)(x2xy8y29) 7 6 1 1(xyy)(xyx2) 3 6 ( y3x9z2)(4y6x5z2) (2k22k)(9k29k2) (2a29a b)(7a23a3b) 9x2(5x

3、25x9)(4x5) 7y2(5x2y)(7x23y2) 1(9x29xyx)(2x29xy8x) 6 1 6(xy4y22)(x2xy6y27) 6 5 6 1(xyy)(xyx2) 5 7 (6y x5z2)(3y8x6z2) (7k2 k)(9k26k1) ( a2 a4b)(2a29a8b) 6x2(2x29x7)( x8) 3y2(5x2y)(7x23y2) 7(7x27xyx)(8x28xy2x) 8 8 6(xy4y29)(x2xy9y22) 7 5 7 5(xyy)(xyx8) 8 6 (8y5x3z2)(9y4x z2) (7k23k)(6k27k7) (3a28a6b)( a28a3b)