Question 199764
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Let *[tex \Large x] represent the width, then *[tex \Large x + 8] represents the length, so:

*[tex \LARGE \ \ \ \ \ \ \ \ \ \ x(x + 8) = 84]

Distribute, put into standard form, and then solve the resulting quadratic.  Exclude the negative root. The positive root is the width and the length is 8 more inches.

Alternatively, you could calculate the area represented by each of the pairs of dimensions given in the 4 choices and select the one that results in 84 square inches.

John
*[tex \LARGE e^{i\pi} + 1 = 0]
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