Final answer:
The question involves the impossibility of adding two matrices with different dimensions, [[9,5],[-2,16]] and [[-6,-3,7],[12,2,-4]], as matrix addition requires matrices to have the same number of rows and columns.
Step-by-step explanation:
The question is about matrix addition, which is a concept in Mathematics. Specifically, the student asks about adding two matrices: [[9,5],[-2,16]] and [[-6,-3,7],[12,2,-4]].
However, matrix addition is only possible when the two matrices have the same dimensions. That is, they must have the same number of rows and columns. The first matrix has two rows and two columns (a 2x2 matrix) while the second matrix has two rows and three columns (a 2x3 matrix).
Since these matrices have different dimensions, it is impossible to add them together. Matrix addition is an operation that involves adding corresponding elements from each matrix to form a new matrix of the same dimensions.
The complete question is: rix does not exist, write impossible. (15) [[9,5],[-2,16]]+[[-6,-3,7],[12,2,-4]] is: