Question: Need help with this question a. Solve the following equation for matrix X. 0 [Marks = 8] b. Find all the 2 x 2 diagonal
Need help with this question

a. Solve the following equation for matrix X. 0 [Marks = 8] b. Find all the 2 x 2 diagonal matrices D that satisfy D2 - D - 21 = 0
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