2(y+2) (y-1) sm caranya ya mks

2(y + 2)(y – 1)
2[ y(y) + y(- 1) + 2(y) + 2(- 1) ]
2(y² – y + 2y – 2 )
2(y² + y – 2)
2(y²) + 2(y) + 2(- 2)
2y² + 2y – 4