SOLUTION: What polynomial represents the area of a rectangle having length L= x+7 and width W= x-3

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Question 845038: What polynomial represents the area of a rectangle having length L= x+7 and width W= x-3
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
For a rectangle,
A=L%2AW
A=%28x%2B7%29%28x-3%29
Using the FOIL Method,
A=x%5E2-3x%2B7x-21
A=x%5E2%2B4x-21