【#文档大全网# 导语】以下是®文档大全网的小编为您整理的《因式分解--十字相乘法练习题含答案》,欢迎阅读!
十字相乘法因式 【2 】分化演习题
2x3x2 1.
2
2
2
x7x6 2.
3.x4x214.x2x15
242(ab)4(ab)3 x6x85.6.22
x3xy2y8.x43x328x2 7.
9.x4x310.a7a10
22y7y12q6q8 11.12.
22
13.xx2014.m7m18
2p5p3616.t22t8 15.
22
17.xx2018.ax7ax8
2222x11xy18y a9ab14b19.20.2222xy5xy6x22.a34a212a 21.
4222
223x11x102x7x3 23.24.2225x6xy8y 6x7x525.26.
27.2x15x728.3a8a4 29.5x7x630.5ab23ab10
2222422223ab17abxy10xy4xy5xy9y 31.32.
22
222
33.4n4n1534.6ll35
222210x21xy2y8m22mn15n 35.36.
22
37.(x5x3)(x5x2)638.(x1)(x2)(x3)(x4)24 (1)a2-7a+6;(2)8x2+6x-35; (3)18x2-21x+5; (4) 20-9y-20y2; (5)2x2+3x+1; (6)2y2+y-6; (7)6x2-13x+6; (8)3a2-7a-6; (9)6x2-11x+3; (10)4m2+8m+3; (11)10x2-21x+2;(12)8m2-22m+15;
22
第1页,-共2页
(13)4n2+4n-15; (14)6a2+a-35; (15)5x2-8x-13;(16)4x2+15x+9; (17)15x2+x-2; (18)6y2+19y+10;
(19)2(a+b) 2+(a+b)(a-b)-6(a-b) 2;(20)7(x-1) 2+4(x-1)-20;
第2页,-共2页
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