Using the quadratic formula to solve x2 + 20 = 2x, what are the values of x?
o 1+ 21i
o-1+ v19i
1+2 v191i
o 1+ v19i

1/2*qr*rs

step-by-step explanation:

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

x= cost per bracelet

number of bracelets * x + shipping charge = total cost

so

9x+9=72