solve square root of blank end root18 cross timessquare root of blank end root50. what type of no. is it , rational or irrational?
 

Asked by yadnya patil | 3rd Jun, 2014, 11:21: AM

Expert Answer:

C o n s i d e r space t h e space n u m b e r space a equals square root of 18 cross times square root of 50 rightwards double arrow a equals square root of 2 cross times 3 cross times 3 end root cross times square root of 2 cross times 5 cross times 5 end root equals a equals square root of 2 cross times 3 cross times 3 cross times 2 cross times 5 cross times 5 end root rightwards double arrow a equals 2 cross times 3 cross times 5 rightwards double arrow a equals 30 T h u s comma space t h e space p r o d u c t space o f space t w o space i r r a t i o n a l space n u m b e r s space n e e d space n o t space b e space i r r a t i o n a l. H e n c e comma space a space i s space a space r a t i o n a l space n u m b e r.

Answered by Vimala Ramamurthy | 3rd Jun, 2014, 02:15: PM