question_answer

Identify the expression equivalent to \[\left( \frac{1}{3y}+\frac{1}{4x} \right)\left( \frac{1}{3y}-\frac{1}{4x} \right).\]                                               

A) \[\frac{1}{3{{y}^{2}}}-\frac{1}{4{{x}^{2}}}\]            

B)  \[\frac{1}{3{{y}^{2}}}+\frac{1}{4{{x}^{2}}}\]         

C)  \[\frac{1}{4{{x}^{2}}}-\frac{1}{3{{y}^{2}}}\]

D)  \[\frac{1}{9{{y}^{2}}}-\frac{1}{16{{x}^{2}}}\]