4. Find the value of k, if , is a solution of the equation .
Given :
Putting (2,1),
we have ,
Therefore, k=7 for putting x=2 and y=1.
CBSE opens post-result facilities for Class 10 main, 2nd exams 2026; apply for scanned copies by August 9
CBSE, NCERT hold joint workshop on Class 9 maths, science textbooks
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