Question

show that 3√5is a irrational number assuming √5 is irrational number​

Answer 1

Answer:

LET 3√5 BE A RATIONAL NUMBER

THEN , 3√5 = A/B

THEREFORE , √ 5 = A/3B . SO √5 IS RATIONAL NUMBER

BUT WE ASSUMED THAT √5 IS IRRATIONAL

THEREFORE 3√5 IS AN IRRATIONAL NUMBER...