Find f(1) if.
f(x)=x^3+2x^2-x-1

1

Step-by-step explanation:

f(x)=x^3+2x^2-x-1

f(1)=1^3+2(1)^2-1-1

f(1)=1+2*1-1-1

f(1)=1+2-1-1=3-1-1=2-1=1

-18

step-by-step explanation:

because mean value defines that total sum value over total number of set