Question

Add [ –6 –2 2] + [–3 2 1].

A. [–9 –3 –5]
B. [–6 0 3]
C. [–9 0 3]
D. [–3 0 3]

Answer 1

The answer should be C if you were to add each point.

Answer 2

The correct option is C.

Explanation:

The given expression is the sum of two matrices.

[ –6 –2 2] + [–3 2 1]

Both are row matrices of order 1 × 3.

We can add two matrices if and only if order of both matrices is same.

In addition of two matrices, we need to add the corresponding elements of the matrices.

[ –6 –2 2] + [–3 2 1] = [ -6-3 -2+2 2+1 ]

[ –6 –2 2] + [–3 2 1] = [ -9 0 3 ]

The sum of given matrices is [ -9 0 3 ]. Therefore the correct option is C.