Question

Calculate the perimeter of a rectangle whose area is 25x2 – 36y² + 12.​

Answer 1

Answer:

Given,

Area of rectangle = 25x2 – 35x + 12.

We know, area of rectangle = length × breadth.

So, by factoring 25x2 – 35x + 12, the length and breadth can be obtained.

25x2 – 35x + 12 = 25x2 – 15x – 20x + 12.

=> 25x2 – 35x + 12 = 5x(5x – 3) – 4(5x – 3)

=> 25x2 – 35x + 12 = (5x – 3)(5x – 4)

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