Answer
-21
Work Step by Step
We are given the expression $2-(6-8)-(-5)^{2}$. According to order of operations, we must first perform all operations in parentheses.
$2-(6-8)-(-5)^{2}=2-(-2)-(-5)^{2}$
Next, we must perform all exponent operations.
$2-(-2)-(-5)^{2}=2-(-2)-(-5\times-5)=2-(-2)-25$
Finally, we perform all addition and subtraction from left to right.
$2-(-2)-25=2+2-25=4-25=4+(-25)=-21$
