Question 1129414
Invalid operation.


Let me explain: When we are performing a multiplication of two matrices, the prerequisite is that we need to have equal number of (1)elements in each column of the first matrix, and (2)elements in the each row of the latter one.
And in our case, the number of (1) is 1, which is not equal to the number of (2), 3.

Hope it helps. Thanks! For more information about matrices please see <a href="https://www.algebra.com/algebra/homework/Matrices-and-determiminant/">here</a>.