2y^2-38y+36=0

2y^2-38y+36=0

2(y^2-19y+18)=0

2(y )(y ) ( -18)( -1)

2 (y-18)(y-1)=0

Check:

2 (y-18)(y-1)

2 (y)(y) (y)(-1) (-18)(y) (-18)(-1)

2(y^2 -y -18y +18)

2(y^2 -19y +18)