Answer:
x-4
Step-by-step explanation:
The answer you're looking for is 40 tennis balls.
Hope this helped!
(-7,3) here is the answer, easy one
Answer:
(5 + 3i)(5 − 3i) = 34
Step-by-step explanation:
The multiplication of two identical binomials who have different symbol, can be solved using the factoring case of a difference of squares:

So, in this case:


Remember that 
So: 
We replace on the polynomial:
