Answer
$-4$
Work Step by Step
RECALL:
The order of operations follow the PEMDAS rule:
First Priority:
P - Parentheses or grouping symbols
Second Priority:
E - Exponents
Third Priority:
M/D - Multiplication or Division, whichever comes first from the left
Fourth Priority:
A/S - Addition or Subtraction, whichever comes first from the left
Use the PEMDAS rule to obtain:
$=10 - [6-2\cdot 2 + 5] \cdot 2
\\=10 - [6-4+5]\cdot 2
\\=10-[2+5] \cdot 2
\\=10 - 7 \cdot 2
\\=10 - 14
\\=-4$
