1.

vector(a x b)2 = (a) a2 + b2 - vector(a.b)(b) a2b2 - vector(a.b)2(c) a2.b2 - 2 vector(a.b)(d) vector(a2.b2) + 2 vector(ab)

Answer»

Answer is (b) a2b2 - vector(a.b)2



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