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If $a$ and $b$ are two vectors, then the value of $(a + b) \times (a - b)$ is

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2(b×a)

-2(b×a)

b×a

a×b

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detailed solution

Correct option is A

(a+b)×(a-b)=a×a-a×b+b×a-b×b=2(b×a)

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If a and b are two vectors, then the value of (a+b)×(a-b) is

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If $a$ and $b$ are two vectors, then the value of $(a + b) \times (a - b)$ is