7) IF P=21+3j-k and Q=21-51+2K.Find 2P+Q and 3P-2
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Explanation:
2P + Q = 4i +6j-2k + 2i-5j+2k = 6i+j+0k
3P-2Q = 6i+9j-3k -(4i-10j +4k) = 2i+19j-7k
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