if a+1/a=17/4, then find the value of a-1/a

Asked by n.gobinda123 | 23rd Aug, 2019, 08:31: AM

Expert Answer:

a + 1/a = 17/4
We know that 
(a - 1/a)2 = (a + 1/a)2 - 4
               = (17/4)2 - 4 
               = 289/16 - 4
               = 225/16
               = (15/4)2 
a - 1/a = 15/4

Answered by Sneha shidid | 23rd Aug, 2019, 09:41: AM