125 - (5-3х)(25+15х+9х²) =
= 125 - (5³ - 3х³) = 125 - 125 + 3х³ = 3х³,
при х = 1 1/3:
3 * (1 1/3)³ = 3 * (4/3)³ = 3 * 64/27 = 64/9 = 7 1/9
ответ 181
125-(5-1)(-25+5+3(2)=181
125 - (5-3х)(25+15х+9х²) =
= 125 - (5³ - 3х³) = 125 - 125 + 3х³ = 3х³,
при х = 1 1/3:
3 * (1 1/3)³ = 3 * (4/3)³ = 3 * 64/27 = 64/9 = 7 1/9
ответ 181
125-(5-1)(-25+5+3(2)=181