Question

10 vă rog ..............​

Answer 1

Răspuns:

Sper sa te ajute. Succes

Explicație pas cu pas: vezi imaginea

Answer 2

a)

$\it x=3\sqrt8-\sqrt{75}+2\sqrt{80}= 3\sqrt{4\cdot2}-\sqrt{25\cdot3}+2\sqrt{16\cdot5}=6\sqrt2-5\sqrt3+8\sqrt5\\ \\ y=\sqrt{32}+5\sqrt{27}+3\sqrt{20}=\sqrt{16\cdot2}+5\sqrt{9\cdot3}+3\sqrt{4\cdot5}=4\sqrt2+15\sqrt3+6\sqrt5\\ \\ m_a=\dfrac{x+y}{2} =\dfrac{10\sqrt2+10\sqrt3+14\sqrt5}{2} =5\sqrt2+5\sqrt3+7\sqrt5$