Question

Let a be a rational number and b be an irrational number. Is ab necessarily an irrational number ? justify your answer with an example

Answer 1

Hi...☺

Here is your answer...✌
================================

We know that,
____________________________
★ The product of a non-zero rational number and an irrational number is always irrational _____________________________
Now as per question,

'a' may be zero(0)

Hence, it is not necessary that ab is an irrational.

{ Note: If a = 0 , Then ab = 0 which is rational }

Answer 2

Answer:

Hi...☺

Here is your answer...✌

================================

We know that,

____________________________

★ The product of a non-zero rational number and an irrational number is always irrational _____________________________

Now as per question,

'a' may be zero(0)

Hence, it is not necessary that ab is an irrational.

{ Note: If a = 0 , Then ab = 0 which is rational }

Read more on Brainly.in - https://brainly.in/question/3175948#readmore

Step-by-step explanation: