初一数学下册计算题天天练 26.docx

1、初一数学下册计算题天天练 26 1 9(xyy)(xyx4) 8 8 (7y2x9z2)(2y3x8z2) (9m29m1)(8m5n4) (6x22x6)2( x28x) 8(x23)9(x28) (x2y6xy5)2(x2y7xy6) 1 1(x211x14y)(x216x11y) 4 4 1 1(6k34k23)(3k32k24k) 6 4 (2k27k)(6k24k9) (3a26a4b)(6a23a8b) 3x2(4x26x7)( x9) 7y2(5x2y)(8x24y2) 4( x29xyx)(2x28xy4x) 3 1 8(xy4y26)(x2xy5y28) 6 7 7 1(xy

2、y)(xyx1) 8 5 (5y6x4z2)(3y x8z2) (7m2 m9)(4m6n4) (3x28x8)7(9x22x) 4(x25)5(x23) (x2y4xy6)2(x2y8xy5) 7 7(x223x19y)(x213x30y) 6 6 1 1(6k34k22)(6k33k23k) 6 5 ( k22k)(9k28k7) (3a2 a9b)( a2 a7b) 7x2(8x2 x6)(9x2) 8y2(5x2y)(6x22y2) 7( x24xyx)( x25xy5x) 8 9 1(xy2y21)(x2xy3y22) 8 7 6 3(xyy)(xyx8) 7 4 (2y9x6z2)

3、(3y5x8z2) (4m27m9)(5m7n6) (5x24x7)2(6x29x) 3(x28)4(x26) (x2y7xy8)6(x2y2xy2) 9 1(x230x18y)(x217x20y) 8 8 1 1( k39k25)(5k36k23k) 6 6 (2k23k)(6k24k4) (4a27a2b)(2a26a7b) 3x2(9x27x9)( x5) 9y2( x2y)(2x2 y2) 1( x26xyx)(6x2 xy8x) 3 6 9(xy3y22)(x2xy6y21) 7 8 1 6(xyy)(xyx5) 4 5 (3y5x z2)(9y7x2z2) ( m24m5)(8m3

4、n4) (9x2 x2)8(7x22x) 4(x29)2(x22) (x2y7xy9)2(x2y4xy4) 2 2(x223x14y)(x215x26y) 3 3 1 1(4k38k27)(8k32k29k) 6 5 (9k26k)(8k2 k3) (4a25a7b)(9a22a8b) 5x2(6x26x9)(4x7) 2y2(5x2y)(3x28y2) 3(3x26xyx)(9x25xy3x) 4 7 3(xy6y25)(x2xy4y28) 8 4 2 1(xyy)(xyx5) 3 4 (6y2x5z2)(3y7x2z2) ( m2 m4)(7m3n2) (8x26x9)5(5x27x) 8

5、(x26)9(x21) (x2y9xy6)5(x2y8xy5) 5 7(x216x11y)(x214x24y) 6 6 1 1(7k32k25)(2k36k25k) 2 2 (4k27k)(6k25k9) (6a28a4b)(3a29a4b) 5x2(5x22x6)(8x1) 3y2( x2y)(6x27y2) 6(3x27xyx)(6x28xy9x) 7 1 5(xy8y28)(x2xy3y25) 6 4 1 3(xyy)(xyx2) 6 4 ( y8x4z2)(8y6x z2) (7m28m3)(5m6n9) (6x25x6)5(3x22x) 7(x25)3(x29) (x2y3xy2)4

6、(x2y9xy6) 5 1(x215x17y)(x215x11y) 6 6 1 1(3k38k29)(2k3 k22k) 6 4 (6k23k)(8k26k6) ( a22a7b)(3a24a b) 9x2(6x26x6)(2x7) 7y2(4x2y)( x2 y2) 1( x26xyx)(8x23xy9x) 3 9 7(xy9y23)(x2xy2y22) 8 8 8 6(xyy)(xyx8) 7 7 (6y x z2)(4y x8z2) (6m23m2)(3m4n7) (2x29x6)3(7x22x) 7(x21)4(x21) (x2y5xy6)2(x2y3xy7) 7 7(x217x20y)(x213x15y) 8 8 1 1(4k32k24)(7k3 k25k) 4 6 (9k29k)(4k25k2) (9a24a2b)(6a22a3b) 9x2(5x29x9)(8x7)