Answer:

Step-by-step explanation:
Recall the form of the difference of squares.

Now let's apply it to your numbers:

Simplify:

Answer:
Step-by-step explanation:
The answer is:
x=1
y=7
Answer:
D. 60y + 48
Step-by-step explanation:
You distribute (multiply) the 12 to everything inside the parentheses.
12 X 5y = 60y 12 X 4 = 48
60y + 48 is your answer. Hope this helps.