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.

  A. 8x -8

Step-by-step 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

there would be 365 different 4 digit numbers

step-by-step explanation:

i belive that it is 365 because i asked google

europa2433

europa2433

step-by-step explanation: