2) Fie a si b cele doua numere.
a+b=26+2/3
a-b=12+1/4
Adunand cele 2 relatii, obtinem:
2a=38+2/3+1/4 = 467/12
Deci a=467/24.
b=26+2/3-467/24= 173/24
3)
[tex]d = \sqrt{ ({0 - 6})^{2} - ({0 - 8})^{2} } [/tex]
[tex]d = \sqrt{36 + 64} [/tex]
Deci d=10.
4) BD^2=AB^2+BC^2 = 2500mm^2
Deci BD=50mm.
5)
[tex] {(x - \sqrt{3} )}^{2} + {(2y - \sqrt{5}) }^{2} = 0[/tex]
Deci x=radical din 3 si y=radical din 5 /2
