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[" 5."4ffa+b+c=0(4)/(c)pi],[quad ((b+c)^...

[" 5."4ffa+b+c=0(4)/(c)pi],[quad ((b+c)^(2))/(bc)+((c+a)^(2))/(ca)+((a+b)^(2))/(ab)quad " and "4sqrt(17)" anffare "]

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