Question

if a/b+b/a=5 value of a/b-b/a=?​

Answer 1

Step-by-step explanation:

$( { \frac{a}{b} - \frac{b}{a} ) }^{2} = {( \frac{a}{b} + \frac{b}{a} )}^{2} - 4 \\ {( \frac{a}{b} - \frac{b}{a} )}^{2} = 25 - 4 = 21 \\ \frac{a}{b} - \frac{b}{a} = \sqrt{21}$