代数式的恒等变形代数式的恒等变形.863,032.1的值求已知例yxyx.20092,01.3232的值求已知例mmmm.2,3.222的值求已知例nmmnnm.7)()1(04.422的值求已知例xxxxxxx.)12(01.5232的值求,已知例xxxx.22,1.63223的值求已知例xyyxyxxyyx.12443,2.722的值求已知例ababbaabba.22,2.83322的值求已知例nmnmmnnm的值求已知例20082008224,2.9yxyxyx.2,01.101997199619952aaaaa化简已知例.22)()1(.11222的值求已知例abbabaaazyxzxyzxyzyx求证:已知例222.12.224.13222的值求证:已知例zyzyzyzy129596979899100.142222222计算:例.352;232.15357的值求时,当时,当为常数,、其中已知例eyxyxedcbaedxcxbxaxy.168.1622222的最大值试确定的实数,和满足、已知例eedcbaedcbaedcba.51284.1722的最小值求多项式例yxyx.63.18的正整数解求例yzxyx.2008.19的所有正整数解求例xyyx的值求已知例1111.20ccacbbcbaabaabc