x(9x+3)=4x^2-11x+3 => 9x^2 + 3x = 4x^2-11x+3 => 5x^2 + 14x - 3. Do you need to complete the square? 5(x^2 + (14/5)*x - 3/5) = 5(x^2 + 2*(14/5) * 1/2 * x + (14/10)^2 - (14/10)^2 - 3/5) = 5(x^2 + 2*(14/10)*x + (7/5)^2 - (7/5)^2 - 3/5)) = 5((x + 7/5)^2 - 49/25 - 3/5) = 5((x + 1.4)^2 - 64/25) = 5(x + 1.4)^2 - 64/5 =
5(x + 1.4)^2 - 12.8
+259 
