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A rectangular garden of length (2x3 + 5x2 - 7) m has the perimeter (4x3 - 2x2 + 4) m. Find the breadth of the garden.(A) (6x2 - 9) m (B) (-6x2 + 9) m(C) (2x3 - 7x2 + 11) m(D) (6x3 + 7x2 + 9) m |
Answer» The correct option is: (B) (-6x2 + 9) m Explanation: Length of the garden = (2x3 - 7x2 + 7) m Perimeter of the garden = 2 x (length + breadth) . .. 4x3 - 2x2 + 4 = 2(2x3 + 5x2 - 7 + breadth) => 2x3 + 5x2 + 2 = (2x3 + 5x2 - 7) + breadth So, breadth ofthe rectangle 2x3 + 5x2 + 2 - 2x3 + 5x2 - 7 = (-6x2 + 9) m |
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