When a question asks you to 'solve' a quadratic equation, this means that you are to find the roots of the quadratic ... the quadratic equation and use algebra to solve. We need to factorise ...

For a quadratic equation of the form \(y = k{(x - a)^2} + b\), the following diagram shows the main properties: If k > 0, the vertex is a minimum turning point If k < 0, the vertex is a maximum ...