Question

prove 2 upon root 7 is an irrational ​

Answer 1

yes it is a irrational number because.

2/ root 7 × root 7 /root 7

2 root 7 / 7

Answer 2

Step-by-step explanation:

Let

2√7

be a rational number which can be expressed in the form of p/q where p and q are integers, relatively prime and q is not equal to 0.

2√7=p/q

p/2q=√7

Since p and 2q are integers so

p/2q

is a rational number which implies that

√7

is a rational number which is not true.

Hence our assumption is wrong.Therefore,

2√7

is irrational number.