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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