ASA = Angle Side Angle so you need a pair of triangles that give you 2 angles and 1 side
the correct answer would be B
-1 because the negative sign in front of the x means it’s a negative 1 x
Answer:

Step-by-step explanation:
In the given image, you can observe we have two right triangles.
Also, we know by given that those triangles are similar, which means their sides are proportional and their angles are congruent.
If the triangles are similar, we can define the following proportion between sides.

Now we use the Pythagorean's Theorem to find each hypothenuse.


Therefore, the missing sides are

The expression is 8(6-4)•2 .