Same chapter3 marksDifficulty: Medium
Prove that √2 is irrational.
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3 marksDifficulty: Medium
Simplify (√5 + √2)(√5 − √2).
Original Khojo Papers practice question — not from a past board paper.
Answer
3
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
It is a difference of two squares, 5 − 2 = 3, so the product of these two irrational numbers is rational.
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