We have been given 4 expressions. We are asked to choose the expressions, which simplifies to 0.
Let us check our given choices one by one.
1.
When we will subtract 8g from 8g, we will get 0. Therefore, expression simplifies to 0.
2.
Let us remove parenthesis.
Upon combining like terms, we will get:
Since simplifies to
, therefore, expression
is not a correct choice.
3.
Let us remove parenthesis.
Upon combining terms, we will get:
Since simplifies to 0, therefore, expression
is a correct choice.
4.
Let us combine the terms as:
Since simplifies to
, therefore, expression
is not a correct choice.