Quadratic Formula

In the videos I’ve worked through some example questions, although you can download the rest of the worksheet & answers:

Download a copy of the question here: QT Quadratic Formula

Here’s a copy of the written answers: QT Quadratic Formula ANSWERS

Here’s the question for this video:
Solve 3d^2+ 3d – 7 = 0
Give your solutions correct to 2 decimal places. (3 marks)

 

Here’s the question for this video:
Solve x^2+2x=9
Give your solution in the form a + brootc.

 

Here’s the question for this video:
The diagram shows a six sided shape formed from two rectangles.
The area of the shape is 102cm^2
All measurements are given in cm.
(a) Show that 2x^2+ 9x-102 = 0 (2 marks)
(b) Find the value of x . Give your answer to 2 decimal places. (3 marks)

 

These videos are a quick reminder of quadratic formula for GCSE maths, and are aimed at around grade 7. Questions on quadratics appear frequently on GCSE papers, mainly towards Q20 onwards, and are usually calculator.

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Quadratic questions can be fairly challenging, although once you have practiced, should be straightforward.
Please do
– stop the video
– work through the question
– compare your solution

 

I hope the videos help and please leave a comment – thanks!

 

These problems are part of the GCSE maths curriculum, and appear on all the main examination boards such as Edexcel, AQA, OCR and Eduqas.

Top Tips!

• Read the question thoroughly
• Work methodically
• Leave plenty of space for calculations 🙂

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Edexcel Maths Higher Paper 2 November 2018

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Edexcel GCSE Maths Foundation Paper 2017; Paper 3

Edexcel GCSE maths foundation November 2018 paper 2

Speed Distance Time; mid level GCSE mathematics questions

 

Please do leave a comment below if you are not sure. Alternately you can view my YouTube channel and leave a comment there – I’ll always try to respond as quickly as possible.

Watch on YouTube:

Quadratic Formula 1 – Quick Video GCSE Maths – Grade 7

Quadratic Formula 2 – Quick Video GCSE Maths – Grade 7

Quadratic Formula 3 – Quick Video GCSE Maths – Grade 7

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