Ask Singapore Homework?

Upload a photo of a Singapore homework and someone will email you the solution for free.



Question

secondary 3 | A Maths
2 Answers Below

Anyone can contribute an answer, even non-tutors.

Answer This Question
Guinervere
Guinervere

secondary 3 chevron_right A Maths chevron_right Singapore

Please helppp!!! I wrote the answers in pencil but I need the solutions

Date Posted: 2 months ago
Views: 38

See 2 Answers

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Yeo Kexin
Yeo Kexin's answer
3 answers (Tutor Details)
1st
The main point is: squares will always be positive because (-3)^2 or (3)^2 will always give you a positive number.

As such, you just have to ensure the remaining of the equation will also be positive for the entire equation to be positive!
Derek Goh
Derek Goh
2 months ago
It is much easier to do this question using the discriminant method instead of completing the square.
done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Derek Goh
Derek Goh's answer
17 answers (Tutor Details)
Discriminant question.
Guinervere
Guinervere
2 months ago
Thank you so much. Really understood it much better and it’s easier. Thank u for being patient:)