vector identities

A vector field $\vec{p}$ and a scalar field $r$ are given by: $\vec{p} = (2x^2 - 3xy + z^2) \hat{i} + (2y^2 - 3yz + x^2) \hat{j} + (2z^2 - 3xz + x^2) \hat{k}$ $r = 6x^2 + 4y^2 - z^...

Let 𝜙 be a scalar field, and 𝒖 be a vector field. Which of the following identities is true for div(𝜙𝒖)?