Question

is (5+2√3)×(5-2√3) is rational​

Answer 1

Answer:

5 - 2 √3 = p/q, where p and q are integers, having no common factor except 1 and q ≠ 0. ... Therefore, √3 is also a rational number, which contradicts our assumption. Thus, Our supposition is wrong. Hence, 5 - 2 √3 is an irrational number.

Answer 2

Answer:

YES

Step-by-step explanation:

As (5+2√3)×(5-2√3) = 13, It is a rational.

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