[25 point] while i completely understand foil in the context of polynomials and such, and generally understand it when multiplying by a complex conjugate - i am still having trouble understanding where these numbers are coming from. looking for a very dumbed down explanation of foil in this instance (multiplying radicals in division by complex conjugate). a good answer to me would consistent of drawing out what is being multiplied by what in divisor and dividends. all is appreciated. you!