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I am not able to get the idea for solving this question I know properties of det.
Asked by sharmalalita847 | 14 Apr, 2024, 09:21: PM
Expert Answer
By doing R1 = ( R1+R2+R3) operation on both determinants of RHS , we get
Let us do C2 = C2-C1 and C3 = C3-C1 operations on both determinant
= (x+y+z) ( z-x) [ y-x+z-y ] = (x+y+z) ( z-x)2
Hence k = 1
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