The coordinates of the turning point and the equation of the line of symmetry can be found by writing the quadratic expression ... of \(y = x^2 – 6x + 4\) The coefficient of \(x^2\) is positive ...

Save guides, add subjects and pick up where you left off with your BBC account. Quadratic expressions can be written in the form \(ax^2 + bx + c\), where \(a\), \(b\) and \(c\) are numbers.