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Answer:
The length of the rectangle is of 9 units.
Step-by-step explanation:
Solving a quadratic equation:
Given a second order polynomial expressed by the following equation:
.
This polynomial has roots such that
, given by the following formulas:
Area of a rectangle:
A rectangle has width and length
. The area is the multiplication of these measures, that is:
The length of a rectangle is the sum of the width and one.
This means that , or
The area direct angle 72 units. What’s the length, in units, of the rectangle
We want to find the length. So
Quadratic equation with . So
Since the length is a positive measure, the length of the rectangle is of 9 units.