# How do you multiply #((1, -2), (-4, 3))# with #((-5, 2))#?

##### 1 Answer

Aug 24, 2016

These matrices are not compatible and cannot be multiplied.

They can only be multiplied the other way round to give:

#### Explanation:

These matrices are not compatible as they are shown.

A (2x2) matrix cannot multiply by a (1x2) matrix.

But, a (1x2) matrix can multiply by a (2x2) matrix to give a (1x2)

The red row must multiply by each of the columns in the second matrix.

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