Step-by-step explanation:
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Step-by-step explanation:
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Answer:
https://revisionmaths.com/gcse-maths-revision/shape-and-space/vectors
i find this helpful- hope u do too (can u mark my answer as brainliest?)
You have to multiply whats outside the parenthesis with everything that is inside, so


Multiplication of same bases we sum the exponents



Alternative B.