A= 3i-j-4k B=-2i+4k-3k C=l+2j-k
Find 3A-2B+4C
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Answer:
17i-3j-10k.
Explanation:
3A-2B+4C = 3(3i-j-4k)-2(-2i+4j-3k)+4(i+2j-k)
=9i-3j-12k+44i-8j+6k+4i+8j-4k
= 17i-3j-10k
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