reciprocal math

[jdent]

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find the reciprocal of 2 + 2*square root of 3

some1 help

 

[Streetwolf]

find the reciprocal of 2 + 2*square root of 3

some1 help

Umm... 1 over that?

 

[jdent]

yes very bright but what I meant was in a fraction form .
I am doing top score and their math is impossible anybody have any imput on that

here is another problem

(t^2+2t+4)/(t+1)

 

[Streetwolf]

yes very bright but what I meant was in a fraction form .
I am doing top score and their math is impossible anybody have any imput on that

here is another problem

(t^2+2t+4)/(t+1)

Okay fine.

2 + 2sqrt(3) becomes 1/(2+2sqrt(3))

You can get rid of the sqrt by using its conjugate, 2 - 2sqrt(3).

Multiply the entire thing by 2-2sqrt(3) / 2-2sqrt(3) and you get:

2-2sqrt(3) / (2+2sqrt(3))(2-2sqrt(3))

= 2-2sqrt(3) / (4 - 4sqrt(3)sqrt(3))
= 2-2sqrt(3) / (4-12)
= 2-2sqrt(3) / -8
= -1/4 + sqrt(3)/4

Or (1/4)sqrt(3) - 1/4 if you want to write it that way.


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(t^2+2t+4)/(t+1)

What do you want with this one? Reciprocal?