Prove that 1.2 + 2.3+.......n(n + 1) = n(n + 1)(n + 2)/3 in mathematical induction.

Prove that 1.2 + 2.3+.......n(n + 1) = n(n + 1)(n + 2)/3 in mathematic

1.	Prove that 1.2 + 2.3+.......n(n + 1) = n(n + 1)(n + 2)/3 in mathematical induction.
Answer» Prove that 1.2 + 2.3+.......n(n + 1) = n(n + 1)(n + 2)/3 in mathematical induction. Solution: