Question

Which expression represents the side length of the square in units?

Answer 1

Answer:

The ans is C

Perimeter of a square =4a

(a is length of the side)

so, here

4a=12x+52

thus a= 3x+13

hope this helps!!

Answer 2

Answer:

❣ ANSWER ❣

Perimeter = 4 × side

12x + 52 = 4 × side

12x + 52 / 4 = side

12x / 4 + 52 / 4 = side

side = 3x + 13

area = side × side

= (3x + 13 )(3x + 13 )

= 9x^2 + 39x + 39x + 169

= 9x^2 + 78x + 169

so ii) 3x + 13

hope it helps