Answers>Maths>GCSE>Article

Show x^2 + 8x +15 = 0 in the form of (x+b)^2 +c (complete the square) and then solve the equation

x2+8x +15 = 0
(x+4)2-16 +15=0
(x+4)2-1=0
(x+4)= (+/-)1

x = -3 or -5

Answered by Omar A. • Maths tutor

3272 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

How do you integrate?

Answered by Jeremy S.

X is inversely proportional to Y. When X=4, Y=9. If Y=6, what is the value of X?

Answered by Andrew W.

Factorise x² + 2x - 8

Answered by Hannah B.

Find all solutions of x^2-x-6 using the quadratic formula

Answered by Jack H.

We're here to help

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

Company Information

CareersBlogSubject answersBecome a tutorSchoolsSafeguarding policyFAQsUsing the Online Lesson SpaceTestimonials & pressSitemap

Popular Requests

Maths tutorChemistry tutorPhysics tutorBiology tutorEnglish tutorGCSE tutorsA level tutorsIB tutorsPhysics & Maths tutorsChemistry & Maths tutorsGCSE Maths tutors

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy|Cookie Preferences
CEOP logo
CLICK CEOP

Internet Safety

Sagepay logo

Payment Security

Cyber Essentials logo

Cyber

Essentials

Cookie Preferences