北师大版七年级数学下册整式的加减法计算题精选 458.docx

1、北师大版七年级数学下册整式的加减法计算题精选 458 4x2(6x29x3)(4x4) 4y2(6x2y)(5x24y2) 1(8x22xyx)(8x2 xy8x) 3 5 1(xy6y29)(x2xy7y23) 4 6 3 6(xyy)(xyx6) 4 5 ( y4x z2)(6y4x3z2) (4k22k)( k23k6) ( a23a3b)(3a22a7b) x2( x25x8)(9x5) 6y2(2x2y)(9x2 y2) 1(9x28xyx)(4x26xy x) 4 4 2(xy9y23)(x2xy7y29) 5 3 4 1(xyy)(xyx4) 5 5 (8y7x8z2)( y4x

2、3z2) (4k28k)( k26k6) (5a22a b)(9a24a8b) 7x2( x22x1)(5x8) 3y2(3x2y)( x28y2) 6(5x22xyx)(5x25xy7x) 7 1 6(xy2y28)(x2xy5y28) 5 5 1 2(xyy)(xyx5) 3 3 (8y x4z2)(5y4x6z2) (4k25k)(9k24k9) (8a29a b)(8a23a3b) 6x2(5x27x9)(3x8) y2(4x2y)(8x2 y2) 1(5x25xyx)(9x24xy2x) 8 1 4(xy y22)(x2xy5y28) 8 5 4 4(xyy)(xyx3) 5 3 (

3、2y6x9z2)(2y3x5z2) (9k26k)(8k22k3) (4a29a5b)(4a23a2b) 7x2(9x2 x1)( x8) 2y2(2x2y)(2x23y2) 6(5x22xyx)(2x23xy2x) 7 1 1(xy5y24)(x2xy2y23) 4 7 1 3(xyy)(xyx3) 6 4 (9y2x2z2)(6y4x4z2) (5k24k)(9k24k7) (3a23a4b)(8a26a2b) 8x2(4x22x2)(2x2) 3y2(4x2y)(7x25y2) 1(6x23xyx)(6x22xy2x) 7 1 5(xy3y29)(x2xy5y26) 8 4 1 1(xyy)(xyx6) 7 7