समीकरण \(3x^2-21=0\) में (a), (b), (c) कौन से हैं?
What are (a), (b), (c) in \(3x^2-21=0\)?
Explanation opens after your attempt
A. (3,0,-21)
Concept
Write it as \(3x^2+0x-21=0\). So (a=3), (b=0), (c=-21).
Why this answer is correct
The correct answer is A. (3,0,-21). Write it as \(3x^2+0x-21=0\). So (a=3), (b=0), (c=-21).
Exam Tip
इसे \(3x^2+0x-21=0\) लिखें। इसलिए (a=3), (b=0), (c=-21) हैं।
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