SOLUTION: Given that the matrix 𝑨 = [ 1 3 −2 −1 0 6 2 4 0 ] Find the matrix X, where 𝑿 = 𝑨 𝟐 + 2𝑨 − 3𝑰, and I is a 3 x 3 identity matrix.

Algebra ->  Matrices-and-determiminant -> SOLUTION: Given that the matrix 𝑨 = [ 1 3 −2 −1 0 6 2 4 0 ] Find the matrix X, where 𝑿 = 𝑨 𝟐 + 2𝑨 − 3𝑰, and I is a 3 x 3 identity matrix.      Log On

Sorry, you can't have 𝟐 + 2𝑨 − 3𝑰 because 2 is a number, not a matrix.
It makes no sense to "add the matrix 2𝑨 − 3𝑰 to a plain old number like 2".

Edwin