2

The y-coordinate is zero, confirming that x = -2 is a zero of this function. There also appears to be one or more zeros in the interval between 0 and 1. Let's adjust the window to look more closely at this interval. Set Xmin=0 and Xmax=1. Since we are only interested in the zeros (and not the overall graph behavior), we can use a much smaller range for the y-values, say from -2 to 10.