Answer:
14x²-12y²
Step-by-step explanation:
Answer:

Step-by-step explanation:
(a+b)(a-b)
-ab+ab-

Answer:

Step-by-step explanation:
We are given that


We have to find 
To find the value of
we will multiply f(x) by g(y)

Now,



Hence,

Answer:
4
Step-by-step explanation:
If the shapes are similar we can use the side length proportion to find the value of x:
7/91 = x/52 cross multiply expressions
91x = 364 divide both sides by 91
x = 4