MAT135H1 Chapter 3.4: The Chain Rule

Calculate the scalar triple product u dot (v x w), where u = <1, 1, 0>, v= <3, -2, 2>, and w= <4, -1, 2>.

My professor said:

1a) diverges and converges when |x| < 1.

1b) By the ratio test converges when 3|x| < 1

2) By the ratio test, the series converges when |x| < 1

There are 3 problems so 3 answers please

Please show your work step by step and explain what formulas you used in deriving the answer because I need to write up a report on it. Please make sure your answer is correct pls because I've had too many wrong answers... thanks in advance.