solve this one ASAP

Use mathematical induction to prove that 1 - 2 + 2" - 2" + . . . + (-1)"2" = 1 (2"+)(-1)" + 1)for all integers n 2 0. Structure your answer as follows: 1. Show that the basis step is true. 2. State the inductive hypothesis. 3. Prove the inductive step, identifying where you use the inductive hypothesis