Question

if one side of a square is decreased by 2 metre the other side is increased by 1 m a rectangle will be formed whose area is 9 square metre less than the area of the square find the side of the square

Answer 1

Answer: 7 cm

Step-by-step explanation:

let side be a

area = a²

new area = (a-2)(a+1) = a² + a -2a - 2 =  a² - a - 2 = a² - 9

= a = 7 cm

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Answer 2

Answer:

a= 9999999999999999999999999999 metre

Step-by-step explanation:

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