Question

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

Answer 1

Answer:

√5=2.236

because √5 is irrational, even if we subtract 2 from it , it would remain irrational

√23 -√23= 0

0+3=3

thus(3+√23)-√23 is rational