армения20171

Verified answer

(а-b)/2b=3; a/(2b)-b/(2b)=3
a/(2b)=3+1/2=3,5

(a²+b²)/(4b)=?
(a²-2ab+b²)/(4b²)=9
(a²+b²)/(4b²)-2ab/(4b²)=9
(a²+b²)/(4b²)-a/2b=9
(a²+b²)/(4b²)-3,5=9
(a²+b²)/4b²=9+3,5=12,5

miron2077

Verified answer

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