Question 1012248
x=y+4
(y+4)y,the area


{{{(x+1)(y+1)-xy=18}}}
{{{(y+4)(y+1)-xy=18}}}
{{{y^2+5y+5-xy=18}}}
{{{y^2+5y+5-(y+4)y=18}}}
{{{y^2+5y+5-y^2-4y-18=0}}}
{{{y+5-18=0}}}
{{{y-13=0}}}
{{{highlight(y=13)}}}------------{{{highlight(x=17)}}}