factorise 54x3y + 128y4

Asked by greatnalin | 29th Sep, 2008, 06:12: PM

Expert Answer:

54x3y + 128y4

= 2 y( 27 x3 +  64y3)

= 2y [(3x)3  +   (4y)3]

= 2y (3x + 4y )( 9x^2 +16y^2 -12 xy)

Answered by  | 30th Sep, 2008, 12:45: PM

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