1.

Give possible expressions for the length and breadth of the rectangle whose area is given by 4a2 + 4a – 3

Answer»

Given that area = 4a2 + 4a – 3 

= 4a2 + 6a – 2a – 3 

= 2a (2a + 3) – 1 (2a + 3) 

= (2a – 1) (2a + 3) 

∴ Length = (2a + 3); breadth = (2a – 1).



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