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Grade 12th passAlgebra

If X & Y are 2 x 2 matrices with integer elements such that X3+Y3 = A, then find the det (X + Y): for A see attachement

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Profile image of Y RAJYALAKSHMI
12 Years agoGrade 12th pass
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1 Answer

Profile image of Y RAJYALAKSHMI
12 Years ago
by verification (trial and error) we can find that X = [ -1 0; 0 -1] & Y = [0 1; 0 -1].   det (X + Y) =  2

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