Question

Find the length of the side of a square if its area is
$9 {x}^{2} + 30x + 25$
​

Answer 1

Step-by-step explanation:

area of square = l^2

9x^2 +30x+25= l^2

9x^2 +15x +15x+ 25 =l^2 ...

3x (3x+5) + 5(3x+5) =l^2

(3x+5 )× (3x+5) =l^2

(3x+5)^2 =l^2

THEREFORE length = 3x+5

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