To shift the function \( f(x) = (x+1)^3 \) to the left by 3 units, you need to replace \( x \) with \( x + 3 \).
Thus, the equation becomes:
\[ f(x) = (x + 3 + 1)^3 = (x + 4)^3 \]
So the final form you are looking for is:
\[ f(x) = (x + 4)^3 + 0 \]
In the form \( f(x) = (x + _)^3 + _ \):
\[ f(x) = (x + 4)^3 + 0 \]
Here, the values that fit in the blanks are \( 4 \) and \( 0 \), respectively.