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CBSE Class 12 Math 2019 Delhi Set 2 Solved Paper

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Question : 6
Total: 9
Using properties of determinants, prove the following :
|
a+b+c−c−b
−ca+b+c−a
−b−aa+b+c
|=2(a+b)(b+c)(c+a)‌. ‌
Solution:  
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