Q : 9 Evaluate
We have determinant
Applying row transformations; , we have then;
Taking out the common factor 2(x+y) from the row first.
Now, applying the column transformation; and we have ;
Expanding the remaining determinant;
.
CBSE Class 12 board exams 2025 to have 50% competency-based questions; no change in 10th
CBSE Class 12 board exams 2024 over; expected result date, trends of last 10 years
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