Evaluate :

`4 ( p + q ) - 3 ( p -q )` is equal to

(p-q)^(3)-(p+q)^(3) is equal to

If p : q = 3 : 4 and q : r = 8 : 9 , then p : r is equal to

If p + q = 6 and pq = 8 , then p^(3) + q^(3) is equal to

If P : Q = 5:2,then (2P - 3Q) : (3P - 5Q) is equal to: यदि P : Q = 5 : 2 है, तो (2P - 3Q) : (3P - 5Q) का मान किसके बराबर होगा ?