The surface area of a square card table can be represented by x^2-50x+625.
a: write an expression that represents the side length of the table
b: write an expression for the perimeter of the table

A)
area of a square card table=side x side

a²-2ab+b²=(a-b)(a-b)=(a-b)²

x²-50x+625=x²-2(25)x+(25)²=(x-25)²=(x-25)(x-25)  (=side x side)

the side lengh of the talbe is:   (x-25)

B)
Perimeter: 4(side)=4(x-25)=4x-100

The perimeter is :  (4x-100)

X=y+4 is the answe

You have 2 sides that are 2 cms and you have 6 sides that are 1/2 cm and you have 4 sides that are 1 cm. the smallest sides are 1/2 the medium sized sides are 1 and the smallest are 1/2. so to find the perimeter you have to add them all up together so your answer will be 11 cm's