Question

calculate the perimeter of the rectangle whose area 25x^2-35x+12
need appropriate answer
need answer for grade 9

Answer 1

Answer:

area. length x breadth

perimeter. 2 x (l+b)

Answer 2

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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