C1 simplifying question Watch

jazzie14
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#1
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#1
Simplify

1/4-sqrt5 + 1/4+sqrt5

I found the common denominator to be 11, but i was unsure how to progress from that. the answer is 8/11
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Scienceisgood
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I have scanned my working (sorry about doing it in colouring pencil, only one I had on me), lol...

Name:  C1 Answer.jpg
Views: 78
Size:  267.4 KB

Hope you can see what I did. =)

EDIT:
Just noticed on the second row, I wrote 2 4-swrt5's instead of 1 positive and 1 negative, honest mistake and I don't think it will kill you in the exam, worst case scenario (if being REALLY mean, lose 1 mark).
Last edited by Scienceisgood; 5 years ago
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jazzie14
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(Original post by Scienceisgood)
I have scanned my working (sorry about doing it in colouring pencil, only one I had on me), lol...

Name:  C1 Answer.jpg
Views: 78
Size:  267.4 KB

Hope you can see what I did. =)
awesome, thank you!
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charly2012
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yea 8 /11 will be the simplest form and final answer
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charly2012
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There is the answer

root 5 will cancel out leave you with 8 on top.docx
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