How do you factorise x^2 -4 = 0?

x2 -4=0 becomes (x+2)(x-2)=0

Either one of the two brackets has the value of 0.

If the first bracket is zero, then x+2=0, therefore x=-2

If the second bracket is zero, then x-2=0, therefore x=2

JC
Answered by Jawad C. Maths tutor

3146 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Solve the following equation: 6x – 9 > 4x + 3


How to find the nth term of a quadratic sequence?


Factorise 12x^2 +17x +6


How to solve a quadratic equation.


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