Răspuns :
[tex] \sqrt{180 } = 6 \sqrt{5} [/tex]
Explicație pas cu pas:
media aritmetica are formula
[tex]\frac{x + y}{2} [/tex]
deci
[tex] \frac{3 \sqrt{5} + 6 \sqrt{5} }{2} = \frac{9 \sqrt{5} }{2} [/tex]
180=5*6*6 => sqrt(180)=6sqrt(5)
Media aritmetica este: (a+b)/2=
=[(3+6)sqrt5]/2=
=[9sqrt(5)]/2=4.5sqrt(5)
Succes!
Media aritmetica este: (a+b)/2=
=[(3+6)sqrt5]/2=
=[9sqrt(5)]/2=4.5sqrt(5)
Succes!