Factorise and solve x^2 - 8x + 15 = 0

Look for factors of 15 then when adding together equal -8. A solution to this is -5 and -3 as -5 x -3=15 and (-5)+(-3)=-8 . Therefore the factors of the quadratic are (x-5) and (x-3). Make (x-5)(x-3)=0 so both brackets can equal 0 for this to be the case. As a result, x=5 and x=3

Answered by Amrit S. Maths tutor

2502 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Find the turning point of the curve whose equation is y = (x-3)^2 + 6.


Simplify √48


3x² = 75 Find the value of x.


What is Pythagoras's theorem?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences