Sprowadź wyrażenie do najprostszej postaci :
a) √72-3√32+2√8
b)∛2(∛500-∛4)
a) √72-3√32+2√8 =6√2 -3√16·√2 +2√4·√2 =6√2 -12√2 +4√2 =-2√2
b)∛2(∛500-∛4) =∛2 ·(∛125·∛4 -∛4)=∛2 ·(5∛4 -∛4)=∛2 ·4∛4=4∛8=4·2 =8
a)
b)
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a) √72-3√32+2√8 =6√2 -3√16·√2 +2√4·√2 =6√2 -12√2 +4√2 =-2√2
b)∛2(∛500-∛4) =∛2 ·(∛125·∛4 -∛4)=∛2 ·(5∛4 -∛4)=∛2 ·4∛4=4∛8=4·2 =8
a)
b)