Question

!!EASY 50 POINTS !!

The area of a rectangle is (81x2 − 4y2) square units. Determine the dimensions of the rectangle by factoring the area expression completely. Show your work.

Answer 1

(9x+2y)(9x−2y)

Explanation:

Since both terms are perfect squares, factor using the difference of squares formula, a^2−b^2=(a+b)(a−b) where a=9x and b=2y.

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