5+ radical 7 over 5 radical 7 is equivalent to what?
Question ID
534111
Created
April 20, 2011 6:10pm UTC
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URL
https://questions.llc/questions/534111
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1 answer

Let's take a look at how to solve these kinds of problems.
I'm assuming the problem is this:
5 + √7

5  √7
Multiply both top and bottom by the equivalent of 1 to get rid of the radical in the denominator:
(5 + √7)(5 + √7)

(5  √7)(5 + √7)
Let's multiply using FOIL:
25 + 5√7 + 5√7 + 7

25 + 5√7  5√7  7
Combine like terms:
32 + 10√7

18
Factor out 2 from both the top and bottom:
2(16 + 5√7)

2(9)
Cancel out the 2 from top and bottom.
We end up with this:
16 + 5√7

9
And there you have it!
I hope this helped.Answer ID
534358Created
April 20, 2011 11:53pm UTCRating
0