A2-b2/2a2*a/4a+4b=???

Question

A2-b2/2a2*a/4a+4b=???

Answer 1

(а²-b²)/2a² * a/(4a+4b)= (a-b)(a+b)/2a²  *  a/4(a +b) =  (a-b)/8а

Comments

При а-1 b-9

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а = 1, b = 9? Тогда ответ: (1 -9)/(8*1) = -1