Question

Calculate the perimeter of a rectangle whose area is 25x^ 2 -35x+12.?

Answer 1

Answer:

25x²-35x+12=0

25x²-(20+15)x+12=0

25x²-20x-15x+12=0

5x(5x-4)-3(5x-4)=0

(5x-3) (5x-4) =0

1. 5x-3 = 0

5x = 3

x = 3/5

2. 5x-4 = 0

5x = 4

x = 4/5

length = 4/5 , breadth = 3/5

perimeter of rectangle= 2(l+b)

= 2(4/5+3/5)

= 2×7/5

= 14/5