Question 1074413
If x is one dimension and y is the other, and if y is the side opposite the river bank, then:


{{{system(2x+y=400,xy=1500)}}}
Solve this system.


If substituting for y,
{{{x(400-2x)=1500}}}

{{{x(200-x)=750}}}

{{{200x-x^2-750=0}}}

{{{-x^2+200x-750=0}}}

{{{x^2-200x+750=0}}}
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