Question 859408


{{{y=-2*(x-2)^2}}}
First you simplify, i.e. square the expression in the bracket.
{{{y = -2*( (x-2)*(x-2) )}}}


FOIL:
{{{y = -2*(x*x - 2*x - 2*x + 2*2)}}}
{{{y = -2*(x^2 - 4x + 4)}}}


Now you expand the bracket (multiply everything with -2):
{{{y = 2x^2 + 8x - 8}}}


That's it. The standard form of a curve is {{{y = Ax^2 + Bx + C}}}.