Question

explain (5+root5) (5-root5) is rational or irrational​

Answer 1

Answer:

rational

Step-by-step explanation:

(5+√5)(5-√5)

by applying (a+b)(a-b)=a^2-b^2

=5^2-√5^2

=25-5

=20

Answer 2

Answer:

(5+root5) (5-root5) = 25-5root5+5root5 -5=20 so the answer is rational.