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Question
Given A = `[(4, 1),(2, 3)]` and B = `[(1, 0),(-2, 1)]`, find A2 – AB + 2B
Sum
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Solution
A2 – AB + 2B
= `[(18, 7),(14, 11)] - [(2, 1),(-4, 3)] + 2[(1, 0),(-2, 1)]`
= `[(16, 6),(18, 8)] + [(2, 0),(-4, 2)]`
= `[(18, 6),(14, 10)]`
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Chapter 9: Matrices - Exercise 9 (C) [Page 129]
