Salut,
[tex]A=\sqrt{\dfrac{18^2+24^2}{6^2+8^2}}+2\sqrt{26^2-24^2}=\sqrt{\dfrac{(3\cdot 6)^2+(3\cdot 8)^2}{6^2+8^2}}+\\\\+2\sqrt{(26-24)(26+24)}=\sqrt{\dfrac{3^2\cdot 6^2+3^2\cdot 8^2}{6^2+8^2}}+2\sqrt{2\cdot 50}=\\\\=\sqrt{\dfrac{3^2(6^2+8^2)}{6^2+8^2}}+2\sqrt{100}=\sqrt{3^2}+2\cdot 10=23\in\mathbb{N}.[/tex]
La punctul b), dacă dai pe 4x factor comun, ce obții ?
Green eyes.
