Respuesta :

Answer:

3 ft.²

Step-by-step explanation:

Just substitute 3 into where x is.

(3)²-2×3 = 9-6 = 3

∴ The area of the room is 3 ft.²

Answer:

the value is 3

Step-by-step explanation:

x^2-2x

3^2-2*3

3