Which clue BEST helps you know the passage genre? (i) The author tells why librarians needed to take bo The author tells how the little house in the wood

Factor completely. (If the expression is not factorable using integers, enter PRIME) \[ x^{2}-81 \]

\( \left. \begin{array} { l l } { } & { } \\ { \square } \end{array} \right. \)

PATIO 8

prove: \[ \int_{T} \nabla \phi d T=\int_{\partial T} \phi d \partial \text { and } \int_{T} \nabla \times V d T=-\int_{\partial T} v \times d \sigma \] [Hint: Apply Gauss's Theorem \( \int_{T} \nabla \cdot F d T=\int_{\partial T} F \cdot d \sigma \) to \( F=\phi e_{x} \) and \( F=v \times e_{x} \), etc.]

Solve the following inequality. \[ (x-7)(x-1)^{2}(x+4)<0 \] Write your answer as an interval or union of intervals. If there is no real solution, click on "No solution".