Question Number 149116 by bramlexs22 last updated on 03/Aug/21

If A is a 3×3 matrix where det(A)=−2 then what will be det(3A^2 A^(−1) )? knowing that A^(−1) is the inverse of A

Answered by EDWIN88 last updated on 03/Aug/21

det(3A^2 A^(−1) )=det(3A)=3^3 ×det(A) =27×(−2)=−54