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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 X a

-b X a

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detailed solution

Correct option is A

(a + b) x (a - b) = a x a - a x b + b x a - b x b= 2(b X 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