if the points a(x 2) b(-3 -4) and c(7 -5) are collinear then find the value of x plzz help me fast within 2 min plzz do in copy plzzz.
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f A 1 and A 2 are two non-collinear unit vectors and if ∣A 1+A 2∣=3 , then the value of (A 1−A 2)⋅(2A 1−A 2). A . 1. B . 1/2. C ..
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