Question

provr that root 5 id irrational

Answer 1

hope u'll understand my ans!!:-)

Answer 2

Basically, if square root of 5 is rational, it can be written as the ratio of two numbers as shown below:





Square both sides of the equation above


5=x2y2

Multiply both sides by y2

5 × y2 = x2y2 × y2


We get 5 × y2 = x2.
Hence proved ..