hard core 1 surds question
Watch this thread
Announcements
Page 1 of 1
Skip to page:
ruby598
Badges:
0
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#1
Zacken
Badges:
22
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#2
Report
#2
(Original post by ruby598)
10+ 7root5 + 38/1+2root5
10+ 7root5 + 38/1+2root5
In any case, you'll want to rationalise the


1
reply
Kevin De Bruyne
Badges:
21
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#3
Report
#3
(Original post by ruby598)
10+ 7root5 + 38/1+2root5
10+ 7root5 + 38/1+2root5
0
reply
ubisoft
Badges:
3
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#4
Report
#4
Rationalise the denominator by multiplying by the conjugate. (You should have been taught this)
0
reply
BrasenoseAdm
Badges:
16
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#5
Report
#5
(Original post by Zacken)
I assume you want to simplify it... please state so in the question, also remove ambiguity by using brackets so it's 38/(1 + 2root5) not 38/1+2root5
In any case, you'll want to rationalise the
by multiplying the top and bottom of the fraction by
.
I assume you want to simplify it... please state so in the question, also remove ambiguity by using brackets so it's 38/(1 + 2root5) not 38/1+2root5
In any case, you'll want to rationalise the


As we think ubisoft is staying, before rationalising the denominator we suggest you treat this as a fraction and get both numerators under a common denominator.
You will end up with 80 + ??SQRT5 divided by 1 + 2SQRT5
Then rationalising this as ubisoft suggests should be fairly easy. Good luck!
0
reply
ruby598
Badges:
0
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#6
0
reply
IDK Tuition
Badges:
2
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#7
Report
#7
Normally surds can be simplified in the form a√b or a√b + c. This can be achieved by breaking down the bigger surds and/or rationalising the denominator of any fraction. This question involves the latter.
Hope this helps,
Tom (IDK-tuition.com: online maths, economics and ACT tuition/resources)
Surds video https://www.youtube.com/watch?v=ozdopnMI67U
Hope this helps,
Tom (IDK-tuition.com: online maths, economics and ACT tuition/resources)
Surds video https://www.youtube.com/watch?v=ozdopnMI67U
0
reply
ruby598
Badges:
0
Rep:
?
You'll earn badges for being active around the site. Rep gems come when your posts are rated by other community members.
#8
X
Page 1 of 1
Skip to page:
Quick Reply
Back
to top
to top