Me ajudem pls...
1.

a)2⁴∶2¯⁵=


b)8³.8¯⁷.8⁵=


c)(10⁴)¯⁵=


2.

a)⁵√31+ /⁶√10-/√83-/√4 ←=


b)√12+√75-9√3+√27+√48=


c)4√125+3√45-30√5=


d)(7-5√3) . (2-8√3)=


3.

a)⁴√3∶√3=


b)√2: ²⁰√2⁷=


c)⁸6⁵: ¹²√6²=


4.

a) √2 / √5 =

b) 20 / 3√10=

c)2 / √5+√3=
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