Pomocy. Oblicz:

(2√3)³=
(-√5)⁴=​


Odpowiedź :

a)

[tex](2 \sqrt{3} ) ^{3} = 2 \sqrt{3} \times 2 \sqrt{3} \times 2 \sqrt{3} = 8 \sqrt{27} = 8 \sqrt{9 \times 3} = 24 \sqrt{3} [/tex]

b)

[tex]( - \sqrt{5} ) ^{4} = ( - \sqrt{5} ) \times ( - \sqrt{5} ) \times ( - \sqrt{5} ) \times ( - \sqrt{5} ) = \sqrt{625} = 25[/tex]

Myślę że pomogłem ;)

[tex](2\sqrt{3})^{3} = 2^{3}\cdot\sqrt{3}^{3} = 8\cdot\sqrt{3}^{2}\cdot\sqrt{3} = 8\cdot3\cdot\sqrt{3} = 24\sqrt{3}\\\\(-\sqrt{5})^{4} = (-5^{\frac{1}{2}})^{4} = (-5)^{\frac{1}{2}\cdot4} = (-5)^{2} = 25[/tex]