Question

Sam wrote these four expressions .
1 . n + n + n + n + 2
2 . n + n + n + 2
3 . 4n + 2
4 . 2n + 2n + 2n

PART A- Which expressions are equivalent? Write your answer in the space provided .
PART B- Choose two of Sam’s expressions that are not equivalent . Explain how you know they are not equivalent . Write your answer in the space provided .

Answer 1

Part A) the first and the third answer are equivalent because.

n+n+n+n+2= 4n+2 which is the same as the third answer.

Part B) 2 and 4 are not equivalent because

2) n+n+n+2= 3n+2

4) 2n+2n+2n= 6n

as we can see they are not the same. Therefore they are not equivalent.

hope this helps