कौन सा विकल्प \(12-\sqrt{m}\) को परिमेय बनाता है?
Which option makes \(12-\sqrt{m}\) rational?
Explanation opens after your attempt
A. (m=225)
Concept
\(\sqrt{225}=15\) is rational so \(12-\sqrt{225}\) will be rational. The root of a perfect square is rational.
Why this answer is correct
The correct answer is A. (m=225). \(\sqrt{225}=15\) is rational so \(12-\sqrt{225}\) will be rational. The root of a perfect square is rational.
Exam Tip
\(\sqrt{225}=15\) परिमेय है इसलिए \(12-\sqrt{225}\) परिमेय होगा। पूर्ण वर्ग की जड़ परिमेय होती है।
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