If `(P)/(Q)=(6)/(5)`, find the value of `(P^(2)+Q^(2))/(P^(2)-Q^(2))`:

Find the value of (p^(2)+q^(2))/(r^(2)+s^(2)) , if p:q=r:s

Find the value if (p^(2)+q^(2))/(r^(2)+s^(2)) if p:q: : r:s

If p/q=(2/3)^2-:(6/7)^0, find the value of (q/p)^3

If p = -2, q = - 1 and r = 3, find the value of (i) p^(2) + q^(2) - r^(2) (ii) 2p^(2) - q^(2) + 3r^(2) (iii) p - q - r (iv) p^(3) + q^(3) + r^(3) + 3 pqr (v) 3p^(2) q + 5pq^(2) + 2 pqr (vi) p^(4) + q^(4) - r^(4)

If (p)/(q)=((2)/(3))^(2)-:((6)/(7))^(@) find the value of ((q)/(p))^(3)

If p = 4, q= 3 and r = -2 find the value of p^(2)+q^(2)-r^(2)

(p+q)/(pq)=2,(p-q)/(pq)=6 then find the value of p&q

If p = (3-sqrt(5))/(3+sqrt(5)) and q = (3+sqrt5)/(3-sqrt(5)) ,find the value of p^(2) + q^(2) .