Prove by Mathematical Induction that for .
Step 1: Prove true for n = 1
hence true for n = 1
Step 2: Assume true for n = k
Step 3: Prove true for n = k + 1
not really sure what to do from here, tried this approach
since from step 2 we know that , but not sure if this is right as I do not know what to do with the 2k - 10
any insight appreciated