#### Question

Given `A = [(3,-2),(-1,4)] B = [(6),(1)], C = [(-4),(5)] and D = [(2),(2)]` Find AB + 2C - 4D

#### Solution

AB = `[(3,-2),(-1,4)][(6),(1)] = [(18-2),(-6+4)] = [(16),(-2)]`

`AB + 2C - 4D = [(16),(-2)] + [(-8),(10)] - [(8),(8)] = [(0),(0)]`

Is there an error in this question or solution?

Solution Given `A = [(3,-2),(-1,4)] B = [(6),(1)], C = [(-4),(5)] and D = [(2),(2)]` Find Ab + 2c - 4d Concept: Matrices Examples.