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Given A = [4123] and B = [10-21], find A2 - Mathematics

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Question

Given A = `[(4, 1),(2, 3)]` and B = `[(1, 0),(-2, 1)]`, find A2

Sum
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Solution

A2 = `[(4, 1),(2, 3)][(4, 1),(2, 3)]`

= `[(16 + 2, 4 + 3),(8 + 6, 2 + 9)]`

= `[(18,7),(14, 11)]`

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