-n/3=4
-n/3 x 3=4 x 3
-n=12
-n/-1=12/-1
n=-12
The expression can be solved by expanding the bracket and multiplying out the terms


Therefore, the expression can be simplified as;

Alternatively, using the theorem of difference of two squares, which is

Hence,

Answer:

Step-by-step explanation:
Answer:
y = 0
Step-by-step explanation: