The Total solution for NCERT class 6-12
54 x6y +2x3y4 = 2x3y(27x3 +y3)= 2x3y[(3x)3 +(y)3]= 2x3y(3x +y) [(3x)2 -3xx y + y2]= 2x3y(3x + y) (9x2 -3xy+ y2)