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enrique764058
11.01.2020 •
Mathematics
The rectangle below has an area of x to the second power minus x minus 72 square meters and a length of x plus 8 meters. what expression represents the width of the rectangle?
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Ответ:
Step-by-step explanation:
we know that
The area of rectangle is equal to
where
L is the length of rectangle
W is the width of rectangle
we have
substitute
Solve the quadratic equation in the numerator
The formula to solve a quadratic equation of the form
is equal to
in this problem we have
so
substitute in the formula
so
substitute in the expression of W
simplify
Ответ: