Use expansion by cofactors to find the determinant of the matrix. 21 -30 27 24 -32 18 -10 24 -35 40 32 -22

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A: Given matrix,A=52-221-1210Let A-1 is inverse of A,Then,A.A-1=I52-221-1210A-1=100010001R1→R1-2R210021...

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