NG BAN WAH's answer to Silin's Secondary 3 A Maths Singapore question.

Ask ManyTutors
done 2 Upvotes
clear 0 Downvotes
NG BAN WAH
Ng Ban Wah's answer
414 answers (Tutor Details)
1st
Question 4
Khan
Khan
2 years ago
A little too long for what’s needed.

To find centre, simply divide x and y coefficients by -2. Afterwards use formula sqrt(g^2 +f^2 -c) for the radius. 2 lines of working will do :)