Question

salue (y²-y) -3 (y - 3 + 3y)

Answer 1

Step-by-step explanation:

x−y−x

2

+y

2

(x−y)−(x

2

−y

2

)

(x−y)−(x+y)(x−y)

x−y−x−y+x−y

x−3y=0