Solve the expansions of the following
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visheshkumarsingh8:
It Ok
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hey mate here is your answer
if its right mark me as brainiest
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use the identity (a-b)^3= a^3 - 3a^2b + 3ab^2 - b^3
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Answer:
343x^3 + 729y^3 + 189xy(x+y)
Step-by-step explanation:
a³ + 3a²b + 3ab² +b³
(7x)³ + 3(7x)²(9y) +3(7x)(9y)² +(9y)³
343x³+189x²y+ 189xy² + 729y³
343x³ + 189xy(x+y) + 729y³
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