Question

show that 2√3 +5 is a rational number​

Answer 1

Step-by-step explanation:

We know -/3 is irrational..

Now,

2 is a rational no. We also know that the product of a rational no. and an irrational no. is always irrational...

Therefore, 2-/3 is irrational.

Now similarly, 5 is rational but 2-/3is irrational and the sum of a rational and an irrational no. is always irrational.

Therefore, 2-/3 + 5 is irrational!

Hope it helps...