Question

4 есеп 50 бал берем срочно

Answer 1

$\left \{ {{x-y=5} \atop {x^{2} - y^{2} =185}} \right.$

$\left \{ {{x=5+y} \atop {(5+y)^{2}-y^{2} =185}} \right.$

$25+10y+y^{2} -y^{2} =185$

$10y=160\\y=16$

$x = 16+5\\x=21$

$\left \{ {{21-16=5} \atop {21^{2}-16^{2} =185}} \right.$