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.

Explanation:

Answer 2

Explanation:

(5+2√3) × (5-2√3)

= (5)^2 - (2√3)^2

= 25 - 12

= 13

Answer:

Yes, (5+2√3)×(5-2√3) is rational because 13 is a rational number.