Question

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Answer 1

Answer:

(x+y)³= x³ + y³ + 3x²y + 3xy²

(x−y)³= x³ − y³ − 3x²y + 3xy²

Subtracting,

(x+y)³−(x−y)³= 2y³ + 6x²y

 

 =2y(3x²+y²)

Answer 2

Answer:

4(x+y) cube-(x-y) cube

Step-by-step explanation:

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