For this case we must simplify the following expression:

We solve the operation of the second parenthesis, taking into account that different signs are subtracted and the sign of the major is placed:

We multiply:

We eliminate the parentheses:

We add similar terms, taking into account that equal signs are added and the same sign is placed:

Answer:
The simplified expression is: 
We need more information or a picture please :)
Hi!
y = 16
x = 32
<h3 /><h3>
In 30-60-90 triangles, the hypotenuse is double the length of the shortest leg, and the longer leg is
times the shorter leg.</h3>
We are given the longest leg. To find the shortest leg, we must divide the longest leg value by 

The radicals cancel out and we are left with 16.
The length of y (the shortest leg) is 16.
Now, we also know that the hypotenuse is double the shortest leg. The shortest leg is 16, so if we double that, it's 32.
23 is the number the answer is c
The first blank on the left side should be 0 I think