Ask Singapore Homework?

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



Question

secondary 3 | A Maths
One Answer Below

Anyone can contribute an answer, even non-tutors.

Answer This Question
lana
Lana

secondary 3 chevron_right A Maths chevron_right Singapore

urgent

Date Posted: 1 year ago
Views: 182
Eric Nicholas K
Eric Nicholas K
1 year ago
Tutor Jun Heng almost did correctly, except that equal sign should be used instead of inequality sign since the roots are real and equal.

See 1 Answer

p²x²–(p+2)x+1 = 0
Discriminant > 0
[–(p+2)]²–4(p²)(1) > 0
p²+4p+4–4p² > 0
–3p²+4p+4 > 0
3p²–4p–4 < 0
(3p+2)(p–2) < 0
3p+2 > 0 or p–2 < 0
p > –2/3 or p < 2
–2/3 < p < 2
done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Jun Heng
Jun Heng's answer
37 answers (Tutor Details)
1st