1ã解æ¹ç¨3(x-5)²=2(5-x)
解ï¼3(x-5)²-2(5-x)=3(x-5)²+2(x-5)=(x-5)[3(x-5)+2]=(x-5)(3x-13)=0
æ
å¾x₁=5ï¼x₂=13/3.
2ãâ12+3â(1+1/3)-â(5+1/3)-(2/3)â48
解ï¼åå¼=2â3+3â(4/3)-â(16/3)-(8/3)â3=2â3+2â3-(1/3)â48-(2/3)â48=4â3-â48=4â3-4â3=0.
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