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

OA
Answered by Omar A. Maths tutor

3376 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Write down the value of 169^1/2 (one hundred and sixty nine to the power of a half)


how do you solve these simultaneous equations?


A circle has a radius of 4cm. An isosceles triangle has a base of 8 cm and a height of 12 cm. Which shape has the greatest area?


solve: 4x^2 + 6x - 4 > 0


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 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences