This system can be a bit tricky unless you write it out:
(2n + 2)(2n - 2) ~ First you have to take one variable and multiply it to each of the other two variables, like:
2n * 2n ~ And:
2n * -2 ~ This gives you:
4n^2 - 4n
Now we do this with the other:
2 * 2n
2 * -2
4n - 4
Now we combine them both while adding like terms:
4n^2 - 4
Therefore your answer is: A. 4n^2 - 4
(This is due to how when having the positive 4n subtracted by the negative it cancels it out. Leaving us with the remaining two terms left.)
I hope this helps, have a great rest of your day! ^ ^
~Ghostgate
Answer:
here is a multiplication scale
Step-by-step explanation:
question seems incomplete
there are no notations for inequalities
The equation 44 - x + 2x = 50 can be used to determine the number of cats/kittens adopted.
Step-by-step explanation:
Given,
Number of cats/kittens at the event = 44
Number of cats/kittens at the end of event = 50
Let,
x be the number of cats/kittens adopted
Therefore;
Number of cats/kittens returned = 2x
Number of cats/kittens at the event - adopted + returned = Number at the end of event
44 - x + 2x = 50
The equation 44 - x + 2x = 50 can be used to determine the number of cats/kittens adopted.
Keywords: equation, variable
Learn more about variables at:
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