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If (x + 1/x) = 3, then (x2 + 1/x2) is equal to :

C. 7
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics

If x + y = 7 and xy = 6,
the value of (x3 + y3) is : 

C. 217
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics

If x + y + z = 9  &  xy + yz + zx = 23,
then the value of (x3 + y3 + z3 - 3xyz) is :

A. 108
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics

If (x - 2) is a factor of (x2 + 3qx - 2q), then the value of q is :

D. -1
Posted in:  Basic Operations & Factorization -  Algebra -  Mathematics

If the ratio of the roots of the equation $x^2 + 6x + k - 5 = 0$ is 3:5, then find the value of k.

C. $55/16$
Posted in:  Quadratic Equations -  Algebra -  Mathematics