Help your students prepare for their Maths GCSE with this free completing the square worksheet of 45 questions and answers
Completing the square involves rearranging quadratic expressions into a perfect square form. We can use completing the square as a method for solving quadratic equations by rearranging the equation so that the perfect square is on one side of the equation, and all other terms are on the other side. We then need to isolate the unknown variable by square rooting both sides of the equation, remembering that a square root has a positive and a negative answer. A strong understanding of the order of operations is very important.
The solutions of the quadratic equations may be left as surds or written as decimals as required.
Completing the square can also be linked to transformation of curves and the graphs of quadratic functions. A quadratic function written in its completing the square form gives the turning point of its parabola which can be used to help to sketch quadratic graphs. Completing the square can also be used to show how the quadratic formula is formed with a, b and c as the coefficients of the terms.
There will be students in your class who require individual attention to help them succeed in their maths GCSEs. In a class of 30, it’s not always easy to provide.
Help your students feel confident with exam-style questions and the strategies they’ll need to answer them correctly with our dedicated GCSE maths revision programme.
Lessons are selected to provide support where each student needs it most, and specially-trained GCSE maths tutors adapt the pitch and pace of each lesson. This ensures a personalised revision programme that raises grades and boosts confidence.