6+√6 √6(√6+1)
________= _________=√6/√5
√30+√5 √5(√6+1)
9-а (3+√а)(3-√а)
_____=___________________=3-√а
3+√а 3+√а
1 1*√5 √5
____=________ =__________
2√5 2√5*√5 10
8 8(√7+1) 8(√7+1) 8(√7+1) 4(√7+1)
______=_____________=________=_______=________
√7-1 (√7-1)(7+1) 7-1 6 3