初一数学下册计算题天天练 44.docx

1、初一数学下册计算题天天练 44 ( m2 m2)(2m2n4) (2x24x3)3(5x27x) 6(x28)8(x26) (x2y3xy6)6(x2y3xy4) 1 1(x211x15y)(x211x22y) 7 7 1 1(6k34k25)( k33k28k) 4 3 (2k27k)(7k27k1) (5a2 a5b)(5a27a7b) 6x2(3x23x6)(9x6) y2(4x2y)(2x22y2) 1(3x28xyx)(2x22xy x) 4 8 5(xy2y27)(x2xy6y21) 7 4 6 4(xyy)(xyx7) 7 3 (3y x4z2)(7y2x4z2) (9m23m8

2、)(9m n6) (8x24x4)9(2x29x) 5(x28)2(x28) (x2y2xy2)5(x2y4xy6) 8 1(x210x19y)(x219x20y) 7 7 1 1(5k32k28)(5k3 k22k) 2 5 (5k27k)(9k23k6) (8a2 a b)(6a27a5b) 9x2(6x27x7)(2x6) 6y2(4x2y)(7x24y2) 9(3x26xyx)(7x23xy7x) 8 7 1(xy4y28)(x2xy4y27) 6 8 9 4(xyy)(xyx2) 8 5 (8y3x6z2)(7y x7z2) (3m25m7)(4m7n3) (9x29x4)5(6x2

3、6x) 9(x23)9(x25) (x2y6xy5)3(x2y6xy3) 1 4(x224x11y)(x218x18y) 3 3 1 1(6k39k25)(6k32k26k) 2 3 ( k25k)(8k24k6) (9a25a5b)(2a24a2b) 5x2(2x2 x7)( x4) 5y2(7x2y)(4x28y2) 5(8x28xyx)(2x27xy6x) 6 7 7(xy7y26)(x2xy7y27) 6 6 1 3(xyy)(xyx8) 5 4 (5y7x4z2)(6y x8z2) (9m26m7)( m2n2) (6x27x7)3(4x23x) 8(x23)9(x27) (x2y3

4、xy5)6(x2y3xy6) 1 4(x227x18y)(x211x14y) 5 5 1 1(4k34k25)(4k34k21k) 6 3 (5k24k)(4k24k7) (6a27a9b)(2a2 a5b) 4x2( x25x4)(6x3) 7y2(9x2y)(2x27y2) 8( x25xyx)(7x28xy x) 7 4 1(xy6y29)(x2xy6y26) 3 8 6 2(xyy)(xyx4) 7 3 (2y7x6z2)(8y9x8z2) (9m24m9)(2m n6) (4x28x3)5( x23x) 4(x29)8(x23) (x2y3xy7)8(x2y2xy7) 7 1(x22

5、0x15y)(x215x22y) 8 8 1 1(5k35k29)(3k33k23k) 4 3 (7k26k)( k2 k1) ( a27a2b)(2a22a4b) 2x2(4x27x2)(2x8) 8y2( x2y)(5x26y2) 9(5x25xyx)(9x23xy x) 8 4 6(xy7y24)(x2xy2y27) 5 7 5 1(xyy)(xyx7) 6 6 (5y2x2z2)(6y6x z2) (9m25m5)(5m4n6) (6x28x3)7(2x26x) 3(x22)6(x29) (x2y8xy9)2(x2y3xy5) 1 1(x216x18y)(x213x27y) 8 8 1

6、 1(4k39k25)(3k35k26k) 6 6 (7k27k)(7k26k6) (6a28a2b)(4a25a5b) 4x2(8x2 x9)(7x8) 5y2(5x2y)(3x27y2) 1(3x27xyx)(6x2 xy8x) 3 6 9(xy y29)(x2xy8y24) 7 8 4 6(xyy)(xyx7) 3 5 (3y6x9z2)(2y5x5z2) (7m28m5)( m7n6) (4x22x6)9(8x24x) 3(x23)9(x22) (x2y8xy5)3(x2y4xy5) 7 7(x213x16y)(x220x12y) 8 8 1 1(6k34k23)(2k37k29k) 6 2 (7k2 k)(9k2 k4) ( a27a9b)(8a23a2b) 7x2(9x29x5)(9x8) 2y2(3x2y)( x24y2) 1(8x26xyx)(2x24xy2x) 8