A) a + b is irrational
B) a - b is rational.
C) 2ab is rational
D) \[\frac{a}{b}\] is rational
Correct Answer: C
Solution :
(c): \[2ab=2\left( p-\sqrt{q} \right)\left( p+\sqrt{q} \right)=2\left( {{p}^{2}}-q \right)\]You need to login to perform this action.
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