CIE – 0580 Mathematics IGCSE Paper 22, May/June 2015 – Answers Tagged on: 0580 answers cie IGCSE mathematics may 2015 may/june may/june 2015 paper 22

AbdullahMay 3, 2016 at 7:54 amPermalink In page 12 question 21 how exactly did you get the 10 , ididnt understand your method only in the first step , can you plzz explain?? Reply

pastpaperPost authorMay 3, 2016 at 8:11 amPermalink the given quadratics can be written as (x+m)^2+n so they are equal. I’ve expended the second form and equate the coefficinets for x^2, x and free term. so I’ve got 2m=4 giving m=2 and subtituting it in m^2+n= -4 will give you n=-10 Reply

In page 12 question 21 how exactly did you get the 10 , ididnt understand your method only in the first step , can you plzz explain??

the given quadratics can be written as (x+m)^2+n so they are equal. I’ve expended the second form and equate the coefficinets for x^2, x and free term. so I’ve got 2m=4 giving m=2 and subtituting it in m^2+n= -4 will give you n=-10