Question

Am nevoie urgent la matematică
Calculați :
√24:√6
(-√2)×(√32)
√18×√2
√5×√45

Answer 1

Răspuns: Ai rezolvarea mai jos

Explicație pas cu pas:

Buna !

$\bf a)~\sqrt{24} :\sqrt{6}= \sqrt{2^{2}\cdot6} :\sqrt{6}=2\sqrt{6} :\sqrt{6} =\green{\boxed{\bf ~2~}}$

$\bf b)~(-\sqrt{2}) \cdot(\sqrt{32})= -\sqrt{2} \cdot\sqrt{4^{2}\cdot2}=-\sqrt{2} \cdot4\sqrt{2} =\blue{\boxed{\bf ~-8~}}$

$\bf c)~\sqrt{18} \cdot\sqrt{2}= \sqrt{3^{2}\cdot2}\cdot\sqrt{2}=3\sqrt{2} \cdot\sqrt{2} =\purple{\boxed{\bf ~6~}}$

$\bf d)~\sqrt{5} \cdot|-\sqrt{45}|= \sqrt{5}\cdot \sqrt{45} =\sqrt{5}\cdot \sqrt{3^{2} \cdot5}=\sqrt{5}\cdot 3\sqrt{5}=\red{\boxed{\bf ~15~}}$

Bafta multa !