Question

5.1 State whether the following real numbers are rational or irrational with justification :(a) √4/2 (b) (1+√7) - (7+√7)​

Answer 1

Answer:

a.rational

b.irrational

c.irratinol

Answer 2

Answer:

a)Rational.

b) Irrational.

I guess this is the correct answer only.

Step-by-step explanation:

a)√4=2

√4/2

=2/2

=1

1 is a rational number.

b)(1+√7)-(7+√7)

=1+√7-7+√7

=1-7+√7+√7

=-6+2√7

Multiplying a rational with an irrational number gives an irrational number.

Here, 2 is rational and√7 is irrational

So, multiplying 2 & √7 gives an irrational number.

And adding a rational with an irrational number gives an irrational number.

So, adding -6 & 2√7 gives an irrational number.