Area of the rectangle is given by the polynomial function A(x)=2x^2+18x. If the width of the rectangle is 2x what is the length?
1 answer:
Answer:
x + 9
Step-by-step explanation:
Area = 2x^2 + 18x
Width = 2x
Length = ?
The relationship between these quantities is;
Area = Length * Width
Length = Area / Width
Length = (2x^2 + 18x) / 2x
Using long division;
This leads to;
length = x + 9
Checking;
Area = Length * Width
Area = (x + 9) * 2x
Area = 2x^2 + 18x ; This is correct!
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