Question

1. BC

[-1 2] [2 3 5]
[6 0] * [0 4 -1]

Answer 1

Explanation:

⎡02413524−6⎦⎥⎥⎤ and B=⎣⎢⎢⎡−10021030−1⎦⎥⎥⎤

∴4A=⎣⎢⎢⎡081641220816−24⎦⎥⎥⎤ and 6B=⎣⎢⎢⎡−600126080−6⎦⎥⎥⎤

⇒4A−6B=⎣⎢⎢⎡0−(−6)8−016−04