Work out the value of x.
Worked Solution & Mark Scheme (4 marks)
(x + 2)(x – 5) = 120 ⇒ x² – 3x – 10 = 120 ⇒ x² – 3x – 130 = 0. M3
Factorise: (x – 13)(x + 10) = 0 ⇒ x = 13 (length > 0). A1
Home > Worksheets > GCSE questions by topic > Solving quadratic equations
Free Printable Solving quadratic equations PDF Worksheets, Revision Guide & GCSE Past Paper Questions (Grade 5)
Download free solving quadratic equations worksheets (PDF), GCSE maths past paper questions and worked solutions for Solving quadratic equations (5H). This is a Grade 5 algebra topic from the GCSE questions by topic collection for Foundation and Higher tier crossover GCSE Maths (Edexcel, AQA, OCR and IGCSE).
The free PDF worksheets table below brings together printable question booklets (Qs) and worked answers or mark schemes (Ans) from Maths Genie, Maths4Everyone, Corbett Maths, Maths Made Easy, Dr Frost, Naiker Maths, Dr Austin, E Classroom and PMT, along with past paper question booklets.
Below the worksheet links you can read our solving quadratic equations revision notes and worked examples with diagrams, try real GCSE past paper solving quadratic equations questions with step-by-step solutions, or download a PDF of all solving quadratic equations worksheet links.
| Resource | Questions | Answers |
|---|---|---|
|
Graded exam questions & solutions
|
Qs | Ans |
|
GCSE 9–1 practice booklet & solutions
|
Qs | Ans |
|
Practice Questions & answers
|
Qs | Ans |
|
Textbook Exercise & answers
|
Qs | Ans |
|
MME worksheet & model answers
|
Qs | Ans |
|
GCSE worksheet & solutions
|
Qs | Ans |
|
Exam question booklet & solutions
|
Qs | Ans |
|
Practice grid / worksheet & answers
|
Qs | Ans |
|
GCSE topic booklet & answers
|
Qs | Ans |
|
PMT (Edxl)
Edexcel GCSE topic questions & solutions
|
Qs | Ans |
|
PMT (AQA)
AQA GCSE topic questions & solutions
|
Qs | Ans |
|
PMT (IGCSE)
Edexcel IGCSE topic questions & solutions
|
Qs | Ans |
|
Online topic notes & examples
|
Page | |
|
Self-marking online worksheet
|
Page | |
Explanation:
To solve a quadratic equation by factorising, first rearrange the equation so that one side equals zero (ax2 + bx + c = 0). Never factorise while there is a non-zero number on the right-hand side.
Factorise the quadratic expression into two brackets, then set each bracket equal to 0 and solve for x (because if two brackets multiply to give 0, at least one bracket must equal 0). Notice that the signs of the roots are opposite to the signs in the brackets.
Example 1: Solve x2 − 8x + 15 = 0.
Solution:
Example 2: Solve x2 + 3x = 18.
Solution: