Question

(2-3√5)

answer. let 2-3√5 be an irrational number
2-3√5= a/b= 2
=√5=1/3(a/b)-2
√5=1/3 (a/b-2)
Rhs is a rational number.but lhs is an irrational number.
lhs 2-3√5 is an irrational number​

Answer 1

Answer:

let 2-3√5 be an irrational number

2-3√5= a/b= 2

=√5=1/3(a/b)-2

√5=1/3 (a/b-2)

Rhs is a rational number.but lhs is an irrational number.

lhs 2-3√5 is an irrational number