If f (x-1) = x ^ 2 + 4x-5, then f (x + 1) equals Such as the title

If f (x-1) = x ^ 2 + 4x-5, then f (x + 1) equals Such as the title

In the question, X is replaced by X + 2, f (x + 1) = (x + 2) ^ 2 + 4 (x + 2) - 5 = x ^ 2 + 8x + 7