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The width and area of a rectangle are shown in the figure at the right. What is the length of the rectangle?

(the rectangle:)

A = (4b^3 + 5b - 3) in.^2
Width = (2b - 1) in.

Pls help!? Thx

1 answer

well, consider that

4b^3+5b-3 = (2b-1)(2b^2+b+3)

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