CBSE 2013
2. What is the value of k for which is a root of the equation - kxsquare-7x+3=0
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Answer:
a=k, b= -7, c=3
Discriminent=0
=>b^2-4ac=0
=>(-7)^2-4×k×3=0
=>49-12k=0
=>12k=49
=>k=49/12
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