Question

Which number is not a rational number
a=√4
b=√-2
c=-6
d=(-27)1/3​

Answer 1

a= √4= 2 Rational

b=√-2 = √2 √-1 = i √2 ( Complex no)

c= -6 Rational

d= ( -27)^1/3 = -3 ( rational)

So √-2 is not rational

Answer 2

Step-by-step explanation:

a=√4=2

b=√-2 , irrational number

c=-6

d=-27/3 = -9