⑴8m1 ⑵(ab)31 ⑶ab
⑷(ab)3(ab)3 ⑸16x2y2z29 ⑹a2(xy)b2(yx)
⑺25(mn2)216(mn2)2 ⑻(xy)4(xy)(xy)(xy)4
⑼(ab)n2(ab)n ⑽4(xy)2520(xy1)
11. (x23)22(x23)(x3)(x3)2 12. x42(a2b2)x2(a2b2)2
13. (x21)3(y21)3 14. 9(ab)26(a2b2)(ab)2
2. 求证:81279能被45整除 3. 4(5a2b)29(ab)2
4. (ab)3a3b3 5. abc2ab 6. a4b2a4b
7. x2y242xy 8. a4b2a4b 9. abab 11. (xy)(xy2xy)x2y21 12. x216y28y1 13. xx
14. (xy1)2(xy2)(xy2xy) 1. 9x212xy36y2
2. (ab)4(ab) 3. (3x4y)(4x3y)
4. k(12k) 5. 4(5a2b)9(ab)
6. m4mnn 7. a16a64
4224635322222222279133662222222242222
8. 4x2(xy)212xy(xy)29y2(xy)2 9. (x23x)2(3x1)2
10. (mn)24(mn1) 11. 2(ab)316
12. (12xy)2(x2y2)2 13. (m2n)22(m2n)1 1. (x21)23(x21)x25 2. (x1)42(x1)21
26xy8xyz 3. 2ax2y3bx2y 4.
2223(ab)c2(ba)4ab6aba2b5. 6.
322(ab)(ba)1100a7. 8.
4481xy9.
8a16 10. a
42
11. 2(x-y)2(a-b)-(y-x)3-(y-x)(b-a)2
△abc的三边a、b、c有如下关系式:-c2+a2+2ab-2bc=0,求证:这个三角形是等腰三角形。
2212. 求证:多项式(x4)(x10x21)100的值一定是非负数。
13. 分解因式:(a2bc)
3(ab)3(bc)3
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