\[ \text{Find } 2011^2 - 2010^2 \text{?} \]

To find \( 2011^2 - 2010^2 \), we can use the difference of squares formula, which states: \[ a^2 - b^2 = (a - b)(a + b) \] Here, \( a = 2011 \) and \( b = 2010 \). Therefore, we can rewrite the expression as follows: \[ 2011^2 - 2010^2 = (2011 - 2010)(2011 + 2010) \] Calculating the values: \[ 2011 - 2010 = 1 \] \[ 2011 + 2010 = 4021 \] Now substituting these values back into our expression: \[ 2011^2 - 2010^2 = 1 \times 4021 = 4021 \] Thus, the final answer is: \[ \boxed{4021} \]