Question 1000689
.
The graph of  f  lies below the  x-axis in the semi-infinite interval  ({{{-infinity}}},{{{-3)}}})  and in the interval  (-1, 0).


For your convenience the plot of  f  is below.

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{{{graph( 330, 330, -5.5, 5.5, -5.5, 5.5,
          x*(x+1)*(x+3)
)}}}


&nbsp;&nbsp;&nbsp;&nbsp;<B>Figure</B>. Plot f(x) = x*(x+1)*(x+3)

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