What is the centre and radius of the circle with the equation x(x-2)+y(y+6)+4=0 ?

x(x-4)+y(y+6)+4=0x^2-4x+y^2+6y+4=0x^2-4x+4+y^2+6y+9=9(x-2)^2+(y+3)^2=9=3^2centre (2,-3) radius 3

LW
Answered by Lauren W. Maths tutor

3165 Views

See similar Maths A Level tutors

Related Maths A Level answers

All answers ▸

(The question is too long so it's marked at the top of the answer space, sorry for any inconveniences)


Express 3/2x+3 – 1/2x-3 + 6/4x^2-9 as a single fraction in its simplest form.


Given that 3^(-3/2) = a* 3^(1/2), find the exact value of a.


Why is it that the sum of all natural numbers up to n is 1/2(n)(n+1)?


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences