1)
5 __ 5__ 6______ 5 ______ 5______ 5 ______
√8· √-4+ √(-3)^6 = √8·(-4) + (-3)= √ -32 -3= √ (-2)^5 -3=-2-3=-5
2)
9 ______ 9 ______ 9 ___________ 9 ______ 9 _____ 9 ___
√6+√35 · √6-√35 = √(6+√35)(6-√35)= √ 6²-(√35)² = √36-35 =√ 1 =1
3)
5/ 5__ = 5:5^1/5=5^4/5= 5 ___
√ 5 √5^4
4)
4 / √3-1 = 4·(√3+1)/ (√3-1)(√3+1)=4(√3+1)/ (√3)²-1²= 4(√3+1)/ 2=2(√3+1)=2√3+2
5)
20__ 5 _____
√ a² - √ √a = a^2/20- a^1/10=a^1/10-a^1/10=0
6)
2a×∛a^4 ·3∛a²=2a·a^4/3· 3·a^2/3=6·a^(4/3+2/3)=6a^6/3=6a²