Question

-1/√5 is a rational number​

Answer 1

5 is a rational number because it can be expressed as the quotient of two integers: 5 ÷ 1.

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Answer 2

Answer:

Dear hope it will help you

Step-by-step explanation:

Let us assume that

5

1

be a rational number.

Then, it will be of the form

b

a

wher a and b are co-prime and b



=0.

Now,

b

a

=

5

1

⇒

b

a

=

5∗

5

1∗

5

⇒

b

5a

=

5

Since, 5a is an integer and b is also an integer.

So

b

5a

is a rational number.

⇒

5

is a rational number.

But this contradicts to the fact that

5

is an irrational number.

Therefore, our assumption is wrong.

Hence,

5

1

is an irrational number.