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Автор - gorinkarl07

Даю 24 балла. В этих двух заданиях нужно выбрать правильный вариант ответа(с объяснением).

Ответ

Автор - wieslawlozickip5w1nd

Ответ:

Объяснение:

(a-3y)²  :   (9y²-a²)/16x =

=(a-3y)²/12y  *  16x/(3y+a)(3y-a)=

=-4x(a-3y)/3y(a+3y)= (-4ax+12xy)/(3ay+9y²) =  (12xy-4ax)/(3ay+9y²)

OTBET:2

2.

V=1/3a²h  / *3

3V=a²h  // :h

a²=3V/h

a=√(3V/h)

OTBET:2

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