(\(4+\sqrt{7}\)\(4-\sqrt{7}\)) का मान क्या है?
What is the value of (\(4+\sqrt{7}\)\(4-\sqrt{7}\))?
Explanation opens after your attempt
B. (9)
Concept
This is \(a^2-b^2\), so the value is (16-7=9). Conjugate multiplication removes the radical.
Why this answer is correct
The correct answer is B. (9). This is \(a^2-b^2\), so the value is (16-7=9). Conjugate multiplication removes the radical.
Exam Tip
यह \(a^2-b^2\) है इसलिए मान (16-7=9) है। संयुग्मी गुणन से मूल हट जाता है।
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