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For AX = B with |A| nonzero, how is X found by the matrix method?
AX = A^-1 B
BX = adj A + B
CX = A B
DX = B A
Answer & Solution
Correct answer: A. X = A^-1 B
Multiplying both sides of AX = B on the left by the inverse of A leaves X = A^-1 B.
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