Найдите f(5)   если 1) f(x)x^3. 2)f(x)=x^2-4/x-2. 3) f(x)=3x^2-5x+1. 4)

f(x)x^3 f(5)= 5^3=125 -------------------------------------------------------------------------- 2)f(x)=x^2-4/x-2 f(5) = (5^2 - 4)  / (5-2) = 21 \ 3 = 7 --------------------------------------------------------------------------- 3) f(x)=3x^2-5x+1    f(5) = 3*5^3 - 5*5 +1 = 3*125 - 25 +1 = 375 - 24= 351 ====================================================