Question

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

Answer 1

first is rational and second one is irrational

Answer 2

2-✓5 is a irrational because the subtraction of a rational and irrational is irrational number..
3+✓23-✓23. ✓23-✓23=0. so 3 is left. so,3+✓23-✓23 is a rational number