Автор - zlata33386

Помогите 4 и 6!!!!!!

Ответ

Автор - michindjeva
4.
a) :  :  frac{1}{3}  {b}^{3}  times 3( - b) =  -  {b}^{4}  \ b) :  : 2 {x}^{2}  frac{7}{x}  = 14x
6.
 sqrt{x}  > 0 \   sqrt{x}  = 2 \ x = 4
[0;4) и (4;. + бесконечность)

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