Verified answer

2 / (2√5)

When you rationalize, just simply multiply by the same radical.

So you see a √5 on the deonominator, Just multiply top and bottom (numrator and denominator) by √5.

(2 / (2√5)) * (√5 / √5)

= (2√5) / (2√5*√5)

= (2√5) / (2*5)

= (2√5) / 10

= √5 / 5

Hope this helps :D

simply put: whatever you see on the denominator, multiply top and bottom by the same thing ;D

multiplying both numerator and denominator by √5, we get :

(2 x √5) / (2√5 x √5)

= 2√5 / 10 (2 and 10 get canceled and we're left with 5 in the denominator)

= √5 / 5

get first the conjugate of the denominator ( conjugate means the opposite sign of the given value )

... so the conjugate of 2√5 is - 2√5..

.... the multiply the original fraction with -2√5 / -2√5...

............................................................................

2 / 2√5 * -2√5 / -2√5.. it will look like this.................

multiply first the numerators...... 2 * -2√5 is -4√5

then multiply the denominators....... 2√5 * -2√5 is -4√25... simplified as -4*5 which is -20

.... so our fraction is now -4√5 / 20..

.............. simplify it.......................

-1√5 / 5.......... this is our final answer................ ^^,).. hope it help..

First from the equation you have to raise it first to the power of two = 4/20 then simplify = 1/5.... Thats all..