1. Doprowadź do najprostszej potęgi .
a )
b )
2. Oblicz :
b ) (
1a]
3∛24-∛128+∛375=6∛3-4∛2+5∛3=11∛3-4∛2
b]
√20+2√45+3√125=2√5+6√5+5√5=13√5
2a]
∛3⅜-√(¹⁰/₃)×√(1⅞)=∛(²⁷/₈)-√[¹⁰/₃×¹⁵/₈]=³/₂-√(²⁵/₄)=³/₂-⁵/₂=-²/₂=-1
(√(⅗)²-√(-⅖)²=⅗-(-⅖)=1
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1a]
3∛24-∛128+∛375=6∛3-4∛2+5∛3=11∛3-4∛2
b]
√20+2√45+3√125=2√5+6√5+5√5=13√5
2a]
∛3⅜-√(¹⁰/₃)×√(1⅞)=∛(²⁷/₈)-√[¹⁰/₃×¹⁵/₈]=³/₂-√(²⁵/₄)=³/₂-⁵/₂=-²/₂=-1
b]
(√(⅗)²-√(-⅖)²=⅗-(-⅖)=1