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[Linear Algebra] Why is A^ (-1) = det (A) * A? : r askmath - Reddit trueHello there, So I'm trying to understand why, if: A E R 2x2 where A = ( {a,b}, {c,d}), and A can be inverted Then it's inverted matrix , A -1 is equal to 1 (a c-b d)*A or det (A)*A I can't really find it somewhere online, written in an understandable manner Thanks! EDIT: I think I fucked up in the title, I meant A -1 = 1 det (A) * A