Question

please ans. fast... no spamming plzzz

Answer 1

[0010001111]... Hello User... [1001010101]
Here's your answer...

A + B = 2i + 6j + k
A - B = 4i + 2j - 11k
______________
2A = 6i + 8j - 10k
A = 3i + 4j - 5k
3i + 4j - 5k + B = 2i + 6j + k
B = -i + 2j + 6k
A.B = 3×(-1) + 4×2 + (-5)×6
= -3 + 8 - 30
= - 25

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