Saturday

April 18, 2015

April 18, 2015

Posted by **Kelly** on Sunday, May 31, 2009 at 8:10pm.

So I got a question like when I'm rationalzing a denomenator in order to get simple radical form I really don't know what to do

for example this problem

(6^(2^-1)-3^(2^-1))^-1

ok so I know your trying to get it so it's a perfect sqaure right so I can legally write this

(6^(2^-1)-3^(2^-1))^-1 A = (6 - 3)^-1 = 3^-1

or a simplified formula

(6^(2^-1)-3^(2^-1))^-1 A = 3^-1

and solve for A were A equals the value needed to get the perfect square 6-3 or simply 3 right so I solved

A=3^-1(6^(2^-1)-3^(2^-1))

and I get some value which is equal to

(6^(2^-1)+3^(2^-1))^-1

but where s the proof that this is correct using that formula all you get is some number and I have no idea how you get this answer I know you just make the negetive positive but what allows you to do that?????

- Math -
**bobpursley**, Sunday, May 31, 2009 at 9:12pmYou still haven't read about conjugates. You are NOT trying to get a perfect square, you are trying to get a difference of perfect squares.

http://www.regentsprep.org/Regents/math/algtrig/ATO3/rdlesson.htm

**Answer this Question**

**Related Questions**

Algebra 2 - so i got a question and would like to know if i did this right For ...

math,correction - Simplify by combining like terms. Problem #32 radical (63) - 2...

math , help,algebra - i am up to this point in my problem but i don't know what ...

math,correction - problem #50 Perform the indicated division. Rationalize the ...

radical equation - no solution right? - radical sign (w + 5) = 2 In all my ...

maht,correction - Find the area of the rectangle shown in the figure. length = ...

math - Can somebody please help me with this problem? This is the index-„³ 5 6^-...

math,correction plz - can someone correct my math...thanks... Perform the ...

Math(radicals or square roots) - i need a explanation for this equation: 5 ...

Math:Radical + regular number - Example : 4 + 5 radical 3 How does that work?? ...