Question

The area of a square is (9x^2+54x+81). Find the length of the side

Answer 1

Answer:

Area of the square = 9x²+54xy +81y²

side*side = (3x)² +2*3x*9y +(9y)²

(side)²= (3x+9y)² [ ∵(a+b)²=a²+2ab+b²]

therefore

side of the square = 3x+9y