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murzikaleks [220]
3 years ago
14

Which expressions are equivalent to x+2y+x+2 2(x+y+1) 2x+4y+y none of the above

Mathematics
1 answer:
Setler79 [48]3 years ago
4 0
Hey there!

Keep in mind that x+2y+x+2 is the same thing as 2x+2y+2, since you can add 1x and 1x together to get 2x at the beginning of your expression. 

Now, take a look at your answer choices:

2(x+y+1)

If you use the distributive property on this (which you do by multiplying 2 by each term in your trinomial), you will get the following:

(2)(x) = 2x
(2)(y) = 2y
(2)(1) = 2

2x + 2y + 2

This means that your first answer choice is equivalent. 

Let's take a look at your second answer choice: 

2x+4y+y

You can simplify this by adding together your like terms, which is the y term:

2x+5y

This is not equivalent, so your answer will be your first option only. 

Hope this helped you out! :-)
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