2. The length and breadth of a rectangle are (x-1) and (2x + 1) respectively.
Its area is ______________.
( 2x2 + x-1, 2x2 -x -1, 2x2 –x +1)
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Answer:
2x²-x-1
Step-by-step explanation:
Area of reactangle= l×b
= (x-1)(2x+1)
= 2x²+x-2x-1
=2x²-x-1
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