Determine the value of x that A = 2i + xj + k and B = 4i - 2j -2k
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Answer:A=2i + xj + k
multiply both sides by 2
2A= 4i + 2xj + 2k
When you compare left hand side of two equations
2xj = -2j
Therefore x = -1
Step-by-step explanation:
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