Question 874973
Given the following vectors:

b = -3i + 4j
c = i - 2j
e = -2j + k
Calculate (b + c) x e.

I've attempted this problem many times and I keep getting the answer 2i + 2j + 4k. The provided solution is 2i + 4k or (2, 0, 4).....

b + c = (-3 + 1)i + (4 - 2)j = -2i + 2j
(b + c) x e = [(2*1)-(0*-2)]i - [(-2*1)-(0*0)]j + [(-2*-2)-(2*0)]k

= 2i + 2j + 4k
Your answer is correct.