Technical information
Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: Empareja las opciones Notación: El simbolo ^ indica una potencia y el simbolo * indica un producte {x^2-4; x^2+4·x+4; x^2-4·x+4} -> {(x-2)^2; (x+2)^2; (x-2)·(x+2)}
Right answer summary: x^2-4 -> (x-2)·(x+2); x^2+4·x+4 -> (x+2)^2; x^2-4·x+4 -> (x-2)^2
Question state: todo