" (iii) "-x^(3)+y^(3)+z^(3)+3xyz

State which of the following expressions are a polynomial in one variable and which are not : x^(3) + y^(3) + z^(3) - 3xyz

If u = log (x^(3) + y^(3) + z^(3) - 3xyz) , then (x + y + z)(u_(x) + u_(y) + u_(z)) is equal to

Identify the monomials,binomials,trinomials and quadrinomials from the following expressions: x^(3)+y^(3)+z^(3)( ii) x^(3)+y^(3)+z^(3)+3xyz

If x = 1, y = - 2 and z = 3. find the value of (i) x^(3) + y^(3) + z^3-3xyz (ii) 3xy^(4) - 15 x^(2) y + 4z