Verified answer

27y^2-57y+28

discriminant=225=15^2

y1=(57-15)/54=42/54=7/9

y2=(57+15)/54=72/54=4/3

27y^2-57y+28=(9y-7)(3y-4)

27 X 28 = 756

find factors of+756 which add up to -57 ( coeff of y )

( -21) ( -36) = + 756

27y^2 -21y -36y +28

3y ( 9y - 7) - 4( 9y - 7)

( 3y -4) ( 9y -7) ANSWER