1.

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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