Question

Which of the following expressions are equivalent to the expression 4x + 8?

Choose ALL the expressions that are equivalent.


6x+8−2x



4(x+2)



4x+2



2(2x+8)



4(x+8)



3x+9+x−1



2(2x+4)

Answer 1

6x+8−2x

4(x+2)

3x+9+x−1

2(2x+4)

Explanation:

For an expression to be equivalent it must simplify to 4x + 8.

6x+8−2x = 4x + 8 YES

4(x+2) = 4x + 8 YES

4x+2 = 4x + 2 NO

2(2x+8) = 4x + 16 NO

4(x+8) = 4x + 32 NO

3x+9+x−1 = 4x + 8 YES

2(2x+4) = 4x + 8 YES