$\"\"$

The expression is $\"\"$

$\"\"$ (Replace z and y with 5 and 11 in expression)

To simplify the expression following order of operations to performed:

1. Evaluate the expressions inside grouping symbols.

2. Evaluate Powers.

3. Multiply and/or Divide in order from left to right.

4. Add and/or Subtract in order from left to right.

$\"\"$

In the given expression there are no grouping symbols.

First operation is multiplication

$\"\"$ (Multiply: $\"\"$ )

Next operation is addition.

$\"\"$ (Add: $\"\"$ )

$\"\"$

The value of the expression is 53.