8-8-8-8-8-8-8--8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8-8=0
F ( X ) = 3X^2 + 5X - 3
F ' ( X ) = 6X + 5
F ' ( 0 ) = 5
F ' ( 3 ) = 23
F ' ( 0 ) + F ' ( 3 ) = 28
при делении степеней с одинаковым основанием, показатели степени вычитаются...
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