Calculam:
[tex]6\sqrt{32} =6\sqrt{16\cdot2}=6\cdot4\sqrt2=24\sqrt2[/tex]
[tex]4\sqrt{72}= 4\sqrt{36\cdot2} =4\cdot6\sqrt2=24\sqrt2[/tex]
Adunam :
[tex]24\sqrt2 + 24\sqrt2 = 48\sqrt2[/tex]
Aflam procentul cerut :
[tex]12,5 \% \ din \ 48\sqrt2 = \dfrac{12,5}{100} \cdot 48\sqrt2 =\dfrac{600\sqrt2}{100}=6\sqrt2 [/tex]
Scadem :
[tex]48\sqrt2-6\sqrt2 = 42\sqrt2[/tex]
