54x3 + 2y3 = 2(27x3 + y3) = 2[(3x)3 + (y)3]
A3 + B3 = (A + B)(A2 - AB + B2)
So, (3x)3 + (y)3 = (3x + y)(9x2 - 3xy + y2)
Therefore, 54x3 + 2y3 = 2[(3x)3 + (y)3]
= 2(3x +y)(9x2 - 3xy + y2)
Kevin P.
asked • 01/27/15how do I factor 54x^3+2y^3
54x2+2y2
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