Start with
[tex]5(14-2)^2\div 2[/tex]
Perform the operation inside the parenthesis first:
[tex]5\cdot 12^2 \div 2[/tex]
Perform powers first:
[tex]5\cdot 144 \div 2[/tex]
Multiplications and divisions have the same priority, so we can perform them in any order:
[tex]\dfrac{5\cdot 144}{2} = 5\cdot 72 = 360[/tex]
