Answer:
The first one or the 2nd one, since it says NOT worth half, I would say the first one is the answer.
Step-by-step explanation:
Your question is a difference of squares. both terms that need to be factored are squared. to solve take the square root of each put into two terms one of addition and one of subtraction.
anwser= (5x-9)(5x+9)
the reason this works is because when you foil you get
25x²-45x+45x-81
the middle terms cancel revealing
25x²-81
Answer:
21
Step-by-step explanation:
Answer:
how much percent is off?
Step-by-step explanation:
Answer:
0.7 repeating I believe
Step-by-step explanation:
i'm not sure how i got it, but yea