Question

anyone solve this que pls

Answer 1

you just substitute 19 by 17 in place of x.and substitute -8 by 31 in place of y

Answer 2

Answer:

Hence proved that

LHS ≠ RHS

Step-by-step explanation:

Given that

$x=\frac{19}{17}$

$y=\frac{-8}{31}$

Now we have to verify that

$(x - y)^{-1}=x^{-1}.xy^{-1}$

Taking Left hand side

$(x - y)^{-1}$

substituting values of x and y

$(\frac{19}{17}-\frac{-8}{31})^{-1}$

Simplifying further

$(\frac{19*31-8*17}{527})^{-1}$

$(\frac{453}{527})^{-1}$

$\frac{527}{453}$

Now, taking right hand side

$x^{-1}.xy^{-1}$

substituting the values

$(\frac{19}{17})^{-1}.\frac{19}{17}(\frac{-8}{31})^{-1}$

$\frac{17}{19}.\frac{19}{17}(\frac{-31}{8})^{-1}$

Now this can be simplified into

$\frac{-31}{8}$

This proves that

LHS ≠ RHS