1.

Give possible expressions for the length and breadth of the rectangle whose area is given by 25a2 – 35a + 12

Answer»

Given 25a2 – 35a + 12

= 25a2 – 20a – 15a + 12

= 5a (5a – 4) – 3 (5a – 4) 

= (5a – 4) (5a – 3) 

∴ (5a – 4) (5a – 3) are the length and breadth.



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