The problem you've given is a quadratic equation with the mathematical sentence
Let x be the measure of the border in the entire garden.
Before putting the border:
After putting the border: (Add x)
Since the formula of getting the area of the rectangle is A=LW, we have,
Multiplying it will give you:
Then, apply Subtraction Property of Equality, subtract 92 to both sides of the equation, and it will give you the result of
, which is a quadratic equation.