Express x2+9x+3x^2 + 9x + 3x2+9x+3 in the form (x+a)2+b(x + a)^2 + b(x+a)2+b
State the coordinates of the minimum point of the curve y=x2+9x+3y = x^2 + 9x + 3y=x2+9x+3
