Which one of the following is not a characteristic of

If x −y =4and xy =45,thenthevalueof x ³ −y³is:

If the ratio of the areas of two triangles is 4:3 and the ratio of their heights is 3:4, then the ratio of the lengths of their bases will be

[a/(2a²  + 5a + 2)] = 1/6 , then find the value of (a+1)/a ?

if a² + b² + c² = 2(4a -5b -9c)-122 , then a-b-c = ?

  `sqrt(sqrt(20+sqrt(20+sqrt(20)) ... prop)`   = ?

If the sum of three numbers is zero, then which of the options below will always be equal to the value of the sum of the cubes of those numbers?

If x ²  – 15x + 51 = 0, then determine the value of (x – 5) + {1/(x – 5)}.

If x + y + z = 9 and (x² + y² + z²) = 21, then find the value of (xy + yz + zx)

If 125x³ - 216y³ = (5x - Ay) X (Bx² + 36y² + Cxy), then find the value of 3 X (2A + 6B) - 2C.

If (a - b - c) = 6, and (ab - bc + ca) = 117, then find the value of (a ²  + b ²  + c ² )