Question

Around a square pool there is a footpath of width 2m . If the area of the footpath is 7/9times the pool find the area of pool

Answer 1

now solve this quadratic equation to find x

your answer will be x^2 as we have to find area of the pool

edit ---
above image is wrong ,here is correct answer

solve 7x^2 -72x-144=0
to find x and x^2

in the image as you can see i have mentioned area of foot path =(x+2)^2-x^2

it should be (x+4)^2-x^2