Question

If f(m) = m² − 3m + 1, find f(x + 1)

Answer 1

f(m) = m² – 3m + 1

f(x + 1) = (x + 1)² – 3(x + 1) + 1

= x² + 2x + 1 − 3x − 3 + 1

= x² − x − 1