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發表 lcflcflcf 於 星期一 五月 08, 2006 11:40 pm

x(√2+1)^2 -(1-√2)y+1-4√2=0
x(3+2√2) + y(√2-1)=4√2-1
√2(2x+y)+(3x-y)=4√2-1
解2x+y=4,3x-y=-1
得x=3/5,y=14/5

[問題]x,y的值

發表 tangpakchiu 於 星期一 五月 08, 2006 8:28 pm

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