Объяснение:
(3а+5)³-8 =(3a+5)³-2^3=
=(3a+5-2 ) [(3a+5)²+(3a+5)*2+2²]=
=(3a+3)(9a²+30a+25+6a+10+4)=
=(3a+3)(9a²+36a+39)
Объяснение:
(3а+5)³-8 =(3a+5)³-2^3=
=(3a+5-2 ) [(3a+5)²+(3a+5)*2+2²]=
=(3a+3)(9a²+30a+25+6a+10+4)=
=(3a+3)(9a²+36a+39)