Question

Which expression cannot be simplified?

A. 8x - 8
B. 8x - x
C. 8x + 5x
D. (8 + 5)x
E. -(x + x)

I think it's C because it is the simplified version of D. (8 + 5)x, but I could be wrong and I need to show my work for the others, which I don't quite understand how I could simplify 8x - 8 as it is pretty simple already.

Answer 1

It’s D because it is already simplified but C you can factor out the x so it can be simplified so D is the answer

Also : Mop the floor, hide the wet sign just to catch em slippin

Answer 2

A. 8x -8

Explanation:

"Simplified" in this context means like terms are combined and the result is expressed as a sum of monomials.

A — is already simplified . . . (cannot be simplified)

B — simplifies to 7x

C — simplifies to 13x

D — simplifies to 13x

E — simplifies to -2x