Question

Which of the following numbers is an irrational number?

(a) √16 – 4
(b) (3 – √3) (3 + √3)
(c) √5 + 3
(d) –√25​

Answer 1

Answer:

(b) (3 – √3) (3 + √3).... ...

Answer 2

Step-by-step explanation:

a) √16 -4 = 4-4=0

•°•It is not a irrational number

b)(3-√3)(3+√3) it s in the form of (a+b)(a-b) so, 3-(√3)²=3-3=0

•°• It is also not a irrational number

c) √5+3

√5 is a irrational number

•°• It is a irrational number

d)-√25=-5

•°• It is also a irrational number