bentuk sederhana dari (akar 3 + akar 7) (akar 3 - akar 7) / 2akar5 - 4akar2

(√3+√7)(√3-√7)/(2√5-4√2)
= (3-7)/(2√5-4√2)
= -4(2√5+4√2)/(2√5-4√2)(2√5+4√2)
= -3(2√5+4√2)/(4.5-16.2)
= -3(2√5+4√2)/(20-32)
= -3(2√5+4√2)/-32
= (3/32)(2√5+4√2)

( √3 + √7 )( √3 - √7 )
-------------------------------
2√5 - 4√2

= 3 - √21 + √21 - 7
----------------------------
2√5 - 4√2

= - 4
--------------------
2( √5 - 2√2)

= - 2
-----------------
√5 - 2√2

= - 2 ( √5 + 2√2)
------------------------
(√5 - 2√2 )( √5 + 2√2)

= - 2√5 - 2√2
---------------------
5 - 2√10 + 2√10 - 8

= - ( 2√5 + 2√2)
------------------------
- 3

= ⅓ ( 2√5 + 2√2 )