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Question
If P = `|(2,9),(5 , 7)|` and Q = `|(7 , 3),(4 , 1)|` find 3P - 2Q
Solution
`= |(2,9),(5,7)|_(2 xx 2)` , Q =`|(7,3),(4,1)|_(2 xx 2)`
3P - 2Q = `|(6 , 27),(15,21)| - |(14 , 6),(8 , 2)|`
`= |(6-14 , 27-6),(15-8,21-2)| = |(-8 , 21),(7 , 19)| _(2 xx 2)`
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