Published forOXFORD INTERNATIONALAQA EXAMINATIONSInternational GCSEMATHEMATICSExtendedSteve FearnleyJune HaightonSteve LomaxPeter MullarkeyJames NicholsonMatt NixonOXFORDPublished forOXFORD INTERNATIONALAQA EXAMINATIONSInternational GCSEMATHEMATICSExtendedSteve FearnleyJune HaightonSteve LomaxPeter MullarkeyJames NicholsonOXFORDMatt NixonUNIVERSITY PRESSOXFORDAlthough we have made every effort to trace and contactall copyright holders before publication this has not beenUNIVERSITY PRESSpossible in all cases.If notified,the publisher will rectify anyGreat Clarendon Street,Oxford,OX2 6DP,United Kingdomerrors or omissions at the earliest opportunity.Oxford University Press is a department of the University ofLinks to third party websites are provided by Oxford inOxford.It furthers the University's objective of excellencegood faith and for information only.Oxford disclaims anyin research,scholarship,and education by publishingresponsibility for the materials contained in any third partyworldwide.Oxford is a registered trade mark of Oxfordwebsite referenced in this work.University Press in the UK and in certain other countriesOxford University Press 2016The moral rights of the authors have been assertedFirst published in 2016All rights reserved.No part of this publication may bereproduced,stored in a retrieval system,or transmitted,inany form or by any means,without the prior permissionin writing of Oxford University Press,or as expresslypermitted by law,by licence or under terms agreed with theappropriate reprographics rights organization.Enquiriesconcerning reproduction outside the scope of the aboveshould be sent to the Rights Department,Oxford UniversityPress,at the address above.You must not circulate this work in any other form and youmust impose this same condition on any acquirerBritish Library Cataloguing in Publication DataData available978-0-19-837587-610987654321Paper used in the production of this book is a natural,recyclable product made from wood grown in sustainableforests.The manufacturing process conforms to theenvironmental regulations of the country of origin.Printed in United KingdomAcknowledgementsThe publishers would like to thank the following forpermissions to use their photographs:Cover:blickwinkel/AlamyAll photos by Shutterstock