- #1
leo255
- 57
- 2
Homework Statement
Let P (n) be the statement that 1^3 + 2^3 + · · · + n^3 = (n(n + 1)/2)^2 for the positive integer n. Prove inductively.
Homework Equations
The Attempt at a Solution
[/B]
I am skipping a few steps...I just need help here:
1/4K^2(k + 1)^2 + (k + 1)^3
Since I have access to the solution, the next step is this:
1/4(k+1)^2 [K^2 + 4 (k + 1)]
I am confused at how this is gotten to. I appreciate the help.
Thanks.