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प्रश्न
If P = `|(8,5),(7,2)|` find P - Pt
बेरीज
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उत्तर
P = `|(8 , 5),(7 , 2)|_(2 xx 2)`
P - Pt = `|(8 , 5),(7, 2)| - |(8 , 7),(5,2)|`
= `|(0 , -2),(2 , 0)|_(2 xx 2)`
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