Question

Wykonaj działania:

a) \sqrt{27} - \sqrt{12} + \sqrt{48}

b) 2 \sqrt{32} +3 \sqrt{18} - \sqrt{72}

c) 4 \sqrt[3]{54} + \sqrt[3]{16} - \sqrt[3]{128}

d) 2 \sqrt[3]{24} + 4 \sqrt[3]{81} - 14 \sqrt[3]{3}

Answer 1

a)√27-√12+√48=3√3-2√3+4√3=5√3

 

b)2√32+3√18-√72=8√2+9√2-6√2 =11√2

 

c)4∛54+∛16-∛128 =4∛27·∛2 +∛8·√2 -∛64·∛2 =12∛2 +2∛2-4∛2 =10∛2 

 

d)2∛24+4∛81-14∛3 =2∛8·∛3 +4∛27·3 -14∛3=4∛3+12∛3 -14∛3 =2∛3