Fie [tex] l_{1} [/tex]= latura primului patrat
[tex] l_{2} =latura celui de-al doilea patrat[/tex]
[tex] \frac{ A_{1} }{ A_{2} }= \frac{ l_{1} ^{2} }{ l_{2} ^{2} } [/tex]=36/25
⇒[tex] \frac{ l_{1} }{ l_{2} } = \sqrt{ \frac{36}{25} } = \frac{6}{5} [/tex]
b)x/y=3/5⇒y/x=5/3
x/y=3/5⇒x/3=y/5=k⇒x=3k
y=5k
4x+6y/x+y=