Question 296645
{{{2(y-1)^2 = 4(y + 1)^2 }}} Start with the given equation.



{{{2(y^2-2y + 1) = 4(y^2+2y + 1) }}} FOIL



{{{2y^2-4y + 2 = 4y^2+8y + 4 }}} Distribute.



{{{0 = 4y^2+8y + 4-2y^2+4y-2 }}} Get everything to one side.



{{{0 = 2y^2+12y + 2 }}} Combine like terms.



*[invoke quadratic_formula 2, 12, 2, "y"]