F (x-1) = 2x ^ 2-x to find the derivative of F (x)

F (x-1) = 2x ^ 2-x to find the derivative of F (x)

Let t = X-1
Then x = t + 1
f(x-1)=f(t)=2(t+1)^2-(t+1)=2t^2+4t+2-t-1=2t^2+3t+1
So f (x) = 2x ^ 2 + 3x + 1
Derivation
=4x+3