Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
secondary 3 | A Maths
3 Answers Below
Anyone can contribute an answer, even non-tutors.
Hi! need help with (d) thanks!
Date Posted: 2 years ago
Views: 471
(d)
(4+√7)•(2+4√7) = (4+√7)•(4-√7)•(a+b√7)
2(4+√7)•(1+2√7) = 9•(a+b√7)
2(18+9√7) = 9•(a+b√7)
2(2+√7) = a + b√7
4 + 2•√7 = a + b√7
⇨
a = 4
b = 2
(4+√7)•(2+4√7) = (4+√7)•(4-√7)•(a+b√7)
2(4+√7)•(1+2√7) = 9•(a+b√7)
2(18+9√7) = 9•(a+b√7)
2(2+√7) = a + b√7
4 + 2•√7 = a + b√7
⇨
a = 4
b = 2
See 3 Answers
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Part (a)
Date Posted:
2 years ago
done
{{ upvoteCount }} Upvotes
clear
{{ downvoteCount * -1 }} Downvotes
Part (d)
Date Posted:
2 years ago
360 Tutoring Program