Habluka's Weekly Challenge #1

[Habluka]

1.idk, i haven't studied that.
[gimme 10 mins]
got it::: F(0) + F(1) + F(2) + ... + F(n) = F(n+2) - 1 . [that's the best i could do :D]

2. Use the binomial theorem

thanks for making me realize I made a typo in the first problem, which was supposed to be finding the sum of the first n even fibonacci numbers. Also, please submit answers through PMs