Find the x-intercepts of the polynomial function. State
whether the graph crosses the x-axis, or touches the x-axis
and turns around, at each intercept.
f(x) = x²(x+4)(x² + 1)
O 0, touches the x-axis and turns around;
-4, crosses the x-axis;
-1, touches the x-axis and turns around
0, touches the x-axis and turns around;
4, crosses the x-axis
O 0, touches the x-axis and turns around;
-4, crosses the x-axis;
-1, crosses the x-axis;
1, crosses the x-axis;
O0, touches the x-axis and turns around;
-4, crosses the x-axis
۵