因式分解--十字相乘法练习题含答案

2022-05-02 17:07:01   文档大全网     [ 字体: ] [ 阅读: ]

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因式分解,乘法,练习题,十字,答案


十字相乘法因式分解练习题

1x2

3x2 3x24x21 5x46x2

8



7x2

3xy2y2

9x2

4x3



11y2

7y12 13x2

x20



15p2

5p36 17x4x220 19a29ab14b2





21x2

y2

5x2

y6x2

233x2

11x10 256x2

7x5 272x215x7 295x27x6







313a2

b2

17abxy10x2

y2

334n2

4n15

3510x2

21xy2y2







37(x2

5x3)(x2

5x2)6



2x2

7x6 4x2

2x15





6(ab)2

4(ab)3 8x43x328x2

10a2

7a10 12q2

6q8 14m2

7m18 16t2

2t8 18a2x2

7ax8 20x2

11xy18y2

22a34a2

12a 242x2

7x3 265x2

6xy8y2

283a2

8a4

305a2b2

23ab10 324x4

y2

5x2

y2

9y2

346l2l35 368m2

22mn15n2



38(x1)(x2)(x3)(x4)24


答案:1(x1)(x2)2(x1)(x6)3(x3)(x7)4(x3)(x5) 5(x4)(x2)6(ab1)(ab3)7(xy)(x2y)

8x(x4)(x7)9(x1)(x3)10(a2)(a5)11(y3)(y4) 12(q2)(q4)13(x4)(x5)14(m2)(m9)15(p4)(p9) 16(t2)(t4)17(x4)(x5)18(ax1)(ax8)19(a2b)(a7b) 20(x2y)(x9y)21x(y1)(y6)22a(a2)(a6) 23(x2)(3x5)24(x3)(2x1)25(2x1)(3x5) 26(x2y)(5x4y)27(2x1)(x7)28(a2)(3a2) 29(x2)(5x3)30(5ab2)(ab5)31(3ab2xy)(ab5xy) 32y(x1)(2x3)(2x3)33(2m3n)(2m5n)34(2l5)(3l7) 35(10xy)(x2y)36(2m3n)(4m5n)

37(x1)(x4)(x5x3)38(x3)(x2)(xx8)

2

2

2

2

22

2

22

2




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