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The length of a rectangle is \((3x + 2)\) units and its breadth is \((3x - 2)\) units. Find its area in terms of \(x\). What will be the area if \(x = 20\) units?
 
Answer:
 
The area in terms of \(x =\)
 
The area if \(x = 20\) is  \(sq. \ units\)