Zadania w załączniku. Proszę o rozwiązania w miarę krok po kroku ;)
zad.8.15
a)⁵√2*⁵√3*⁵√4*⁵√5*⁵√6 2*3*4*5*6 1*1*1*5*1
--------------------------- =----------------=--------------=5/160
⁵√12*⁵√10*⁵√8*⁵√6*⁵√4 12*10*8*6*4 4*5*8*1*1
b)√ 7¹/₉ - ∛-o,o27/0,3 -2⅔=√ ⁶⁴/₉ -(∛-o,3³)/0,3 - 8/3= 8/3-0,3/0,3-8/3=-1
c)√1⁷/₉ -2∛-2¹⁰/₂₇ √¹⁶/9-2∛-⁶⁴/₂₇ ⁴/₃ -2*(-⁴/₃) ⁴/₃ -⁸/₃
----------------------- - 2√1=------------------- - 2=--------------- -2=---------- - 2 =
∛-0,008 0,2 0,2 0,2
=-4/3/0,2 - 2=-0,75/0,2 -2 =3,75-2=1,75
d)[√1,21+5∛o,oo8 -√4,41]/√₁₃ =(1,1+5*0,2-2,1)/√₁₃=(-1+1)/√₁₃=0/√₁₃=0
8.16
a)∛a*∛b^{2}*∛a^{2}*∛b^⁴=∛a³*∛b^⁶=a*b^²
b)⁴√a/b *⁴√b/⁴√c :√a/c= ⁴√a/⁴√b* ⁴√b/⁴√c :⁴√a/⁴√c =⁴√a/⁴√c * ⁴√c/⁴√a=1
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zad.8.15
a)⁵√2*⁵√3*⁵√4*⁵√5*⁵√6 2*3*4*5*6 1*1*1*5*1
--------------------------- =----------------=--------------=5/160
⁵√12*⁵√10*⁵√8*⁵√6*⁵√4 12*10*8*6*4 4*5*8*1*1
b)√ 7¹/₉ - ∛-o,o27/0,3 -2⅔=√ ⁶⁴/₉ -(∛-o,3³)/0,3 - 8/3= 8/3-0,3/0,3-8/3=-1
c)√1⁷/₉ -2∛-2¹⁰/₂₇ √¹⁶/9-2∛-⁶⁴/₂₇ ⁴/₃ -2*(-⁴/₃) ⁴/₃ -⁸/₃
----------------------- - 2√1=------------------- - 2=--------------- -2=---------- - 2 =
∛-0,008 0,2 0,2 0,2
=-4/3/0,2 - 2=-0,75/0,2 -2 =3,75-2=1,75
d)[√1,21+5∛o,oo8 -√4,41]/√₁₃ =(1,1+5*0,2-2,1)/√₁₃=(-1+1)/√₁₃=0/√₁₃=0
8.16
a)∛a*∛b^{2}*∛a^{2}*∛b^⁴=∛a³*∛b^⁶=a*b^²
b)⁴√a/b *⁴√b/⁴√c :√a/c= ⁴√a/⁴√b* ⁴√b/⁴√c :⁴√a/⁴√c =⁴√a/⁴√c * ⁴√c/⁴√a=1