Question

Please help! What values of x make the matrix M have an inverse?

Answer 1

I'm not sure I'm only in middle school, but I'll put what I know.

Explanation:

Step 1: Calculate the minor for the given matrix.

Step 2: Turn the obtained matrix into the matrix of cofactors.

Step 3: Then, the adjugate, and.

Step 4: Multiply that by reciprocal of determinant.