Срочно решите #7!!!!!!

Question

Срочно решите #7!!!!!!

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Answer 1

(3а/b+b/3a+2)* 3ab/(b+3a)=(9a²+b²+2*3*a*b)/3ab  *  3ab/(b+3a)=3ab(3a+b)² / 3ab(3a+b)= 3a+b

3(5-√7)+3√7+1=15-3√7+3√7+1=16