Question

is (3+√5) (3-√5) irrational justify​

Answer 1

Answer:

So (3+√5)(3-√5) is not irrational

Step-by-step explanation:

(a+b)(a-b) = a²-b²

(3+√5)(3-√5) = 3²_(√5)² = 9-5 =4

4 is rational.

So (3+√5)(3-√5) is not irrational