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:

Answer:
See below
Step-by-step explanation:
Many ways...
x+x-3
2x-6+3
5x-3x-3
(4x-6)/2
And the list goes on...
I guess it's A -4 sorry if it's wrong answer
Given the numbers above and those numbers only the mean would be 1.8
I’m pretty sure that the figure is a rectangle and the two longer sides are 9 centimeters and the shorter ones are 6 centimeters. Rectangles have 4 right angles and all of the side lengths added together equals 30 centimeters