MATEMÁTICA B, URGENTE A equação da mediatriz do segmento de extremos A(2, -1) e B(8, 1) é:

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm