Answer
Refer to the blue graph below.
Work Step by Step
RECALL:
The function $y=f(x-h)$ involves a horizontal shift of $h$ units to the right of the parent function when $h\gt 0$ and $|h|$ units to the left when $h \lt 0$.
The given function can be written as $f(x)=[x-(-1)]^2$.
This is in the same format as the equation above, and has $h=-1$.
This means that the graph of $y=(x+1)^2$ involves a horizontal shift of $|-1|=1$ unit to the left of the parent function $y=x^2$
Thus, to graph the given function:
(1) Graph the parent function $y=x^2$ .
(Refer to the red graph in the attached image below)
(2) Shift the parent function 1 unit to the left.
(Refer to the blue graph in the attached image above.)