Which statement best describes the equation (x + 5)2 + 4(x + 5) + 12 = 0? The equation is quadratic in form because it can be rewritten as a quadratic equation with u substitution u = (x + 5). The equation is quadratic in form because when it is expanded,
As explained below
u-substitution will describe it as quadratic in u. For quadratic in x, its expansion will have the highest power of x as 2, will best describe it as quadratic in x.