4 x + 2 y whole cube + 4 x - 2y whole cube
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Answer:
please check your question
Answered by
1
Answer:
4xy(32x²+4y²+12)
Step-by-step explanation:
By using identity (a+b)³=a³+b³+3ab(a+b)
(where a=4x and b=2y)
=(4x+2y)³ + (4x+2y)³
=[(4x)³+(2y)³+3(4x)(2y)] + [(4x)³+(2y)³+3(4x)(2y)
=[64x³+8y³+24xy]+[64x³+8y³+24xy]
=2×(64x³+8y³+24xy)
=128x³+16y³+48xy
=4xy(32x²+4y²+12)
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