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)

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

B)

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

answer: The perimeter is : (4x-100)