Question

if f (x)=x³-1,find f(x+1)​

Answer 1

Answer:

x^3+3x^2+3x

Step-by-step explanation:

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

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

Answer 2

Answer:

If f(x) = x^3+1. , then

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

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

or. f(x-1)= x^3-3x^2+3x. ,putting f(x-1)= f(x)-27.

or. f(x) - 27 = x^3-3x^2+3x. , putting f(x)= x^3+1.

or. x^3+1–27= x^3-3x^2+3x.

or. 3x^2–3x-26 =0

or. x= {3+/-√(9+312)}/6. = {3+/-√321}/6.= {3+/-17.92}/6.

or. x= 20.92/6. or -14.92/6

or. x=3.486. , -2.486.