simplify (4x-3y)³+(4x+3y)³
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Answer:
here is your answer...
Step-by-step explanation:
(a+b)
3
+(a−b)
3
=[a
3
+b
3
+3ab(a+b)]+[a
3
−b
3
−3ab(a−b)]
=2(a
3
+3ab
2
)
Therefore,
(4x+2y)
3
+(4x−2y)
3
=2[(4x)
3
+3×4x×(2y)
2
]
=2(64x
3
+48xy
2
)
=128x
3
+96xy
2
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