The fast mental shortcut for inverting any 2x2 matrix in Linear Algebra!

The fast mental shortcut for inverting any 2x2 matrix in Linear Algebra!
www.amazon.com/shop/influen...
Great math and economics workbooks for those studying or brushing up on skills! #CollegeMath #FinanceMath #StatisticsPractice #EconomicsMajor #ExamPrep #BusinessMath #QuantitativeAnalysis