Looking at the graph we can see that the roots occur at (-1, 0) and (3, 0), therefore \(x = - 1\) and \(x = 3\). Now try the example question below. Solve the quadratic equation \({x^2} ...

Next, we need to find the roots of the equation. We can use the 'discriminant' to show how many roots there are, if any: \({b^2} - 4ac\textgreater0\) means there are two roots \({b^2} ...