Medium Math Class 9 Level 9

What is obtained after rationalizing 1/(√21 - √12)?

1/(√21 - √12) का हर परिमेय करने पर क्या मिलेगा?

A (√21 + √12)/9 / (√21 + √12)/9 B (√21 - √12)/9 / (√21 - √12)/9 C √21 + √12 / √21 + √12 D 9/(√21 + √12) / 9/(√21 + √12)
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Correct Answer

A. (√21 + √12)/9 / (√21 + √12)/9

Explanation

Multiplying by the conjugate makes the denominator 21 - 12 = 9.

संयुग्मी से गुणा करने पर हर 21 - 12 = 9 हो जाता है।

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