For - 11 ? x ? 13 the function f is defined by f(x) = x (x + 1)On which two intervals is the function

For - 11 ? x ? 13 the function f is defined by f(x) = x³ (x + 1)²On which two intervals is the function increasing (enter intervals in ascending order)?Find the interval on which the function is positive:Where does the function achieve its minimum?