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Question
Evaluate the following :
`|(-2 , 3),(-1 , 4)| |(6 , 4),(3 ,- 1)|`
Solution
`|(-2 , 3),(-1 , 4)|_(2xx 2) |(6 , 4),(3 ,- 1)|_(2 xx 2)`
` = |(- 2 xx 6 + 3 xx 3 , -8-3),(-6+4 xx 3 , -4-4)|`
`= |(-3 , -11),(6 , -8)|_(2 xx 2)`
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