Step-by-step explanation:
a = 2i + j - k
b = -1 -7j + k
a × b = (2i + j - k) (-1 + 7j + k)
-2i + 14ij + 2ik - j + 7j^2 + jk + k -7jk - k^2
-2i + 14ij + 2ik -j +7j^2 +jk - 7jk + k - k^2
-2i + 14ij + 2ik - j +7j^2 - 6jk + k - k^2
Answer: A. 9567m
i hope i'm correct let me know if i'm wrong
9×1=09
9×2=18
9×3=27
as you can see the algorithm would most likely be deducting one from the second digit and adding it to the first digit
Answer is in a photo. I couldn't attach it here, but I uploaded it to a file hosting. link below! Good Luck!
