The quadratic formula for a quadratic equation in the form of \(ax^2 + bx + c = 0\) is ... so the equation has no real solutions. The graph of \(y = x^2 + 2x + 5\) does not cross or touch ...

Save guides, add subjects and pick up where you left off with your BBC account. In this part you do not have to sketch the graph and you may even be given the sketch of the graph to start with.