Question

let f (x)=3xcube-x+5,find f (x+1)​

Answer 1

Answer:

this is my answer

and i have doubt:- is that (3x)^3 or 3(x) ^3

I give u that answer to 3(x) ^3

I hope u will like it

Answer 2

Answer:

3x³ + 9x² + 8x + 7

Step-by-step explanation:

f(x) = 3x³ - x + 5

f(x + 1) = 3(x + 1)³ - (x + 1) + 5

f(x + 1) = 3(x³ + 3x² + 3x + 1) - x - 1 + 5

f(x + 1) = 3x³ + 9x² + 8x + 7