Question

Classify the following numbers as rational or irrational:
1) 2-√5
(2) (3 +√23) - 23 (ii)
2√7/7√7​

Answer 1

Step-by-step explanation:

1) 2 is a rational

√5=2.236..... which is non- terminating non -repeating is an irrational number

we know that rational number - irrational= irrational

2-√5 is an irrational number

2. (3+√23)-√23=3+√23-√23

=3

=3/1

sence it is of the form p/q

so, it is a rational number

3. 2√7/7√7=2/7

since it is form of P/q

so, it is a rational number