Did he make an error?
4x+6-x=2x+3
1st step: 5x+6=2x+3

yes, what you do to one side you must do to the other. In order to move the x over you must add it to both sides so the first step would be 4x+6=3x+3

4x+6-x=2x+3

1st step: 5x+6=2x+3

YES

He made an error when combine like terms

He's supposed to get 3x from 4x - x

So correct in step 1 should be

3x+6 =2x+3

step-by-step explanation:

we can use this expression to calculate the energy gain as a particle moves with a field or the energy loss as it moves against it. (note that it is also used to define the electron-volt, a unit of energy equal to that gained by an electron as it falls through a pd of 1 v, i.e. w = 1 ev = 1.6 10-19 c 1 v = 1.6 10-19j).in fact this expression is really nothing more than the statement that potential is the potential energy per unit charge. in this case, v= w/qis simply stating that the change in potential energy(or work done) per unit charge is equal to the change in potential (or potential difference), v.student questions: uniform electric fields2electron beamcathode+5 kvanode0 v

i dont know

step-by-step explanation:

umm. i dont know