Răspuns :
Salut,
2x²+2x = 2x(x+1).
x²-1 = (x-1)(x+1).
x²-y² = (x-y)(x+y).
Succes! :3
2x²+2x = 2x(x+1).
x²-1 = (x-1)(x+1).
x²-y² = (x-y)(x+y).
Succes! :3
2x^2 +2x = 2x ( x + 1)
x^2 - 1 = ( x - 1) ( x + 1)
x^2 - y^2 = ( x- y) (x + y)
x^2 - 1 = ( x - 1) ( x + 1)
x^2 - y^2 = ( x- y) (x + y)