Show that i Negative of an irrational number is irrational ii The product of a nonzero rational numb...

Question

Show that i Negative of an irrational number is irrational ii The product of a nonzero rational number and an irrational number is an irrational number

Accepted Answer

i Let the irrational number be 2 Considering the negative of 2 we get 2 We know that 2 is an irrational number Hence negative of an irrational number is irrational ii Let the nonzero rational number be 3 Let the irrational number be 5 Then according to the question 3 5 35 3 22 66 which is irrational

Selina Solutions Class 9 Mathematics Solutions for Exercise 1(D) in Chapter 1 - Chapter 1- Rational and Irrational Numbers