Question

Subtract a4 + b3 + 3a²b2 – 7ab3 from a3 + b4 + 3a2b2 – ab3.​

Answer 1

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Answer 2

Answer:

Step-by-step explanation:

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lets say on subtraction x we get required solution

⇒(a³-3a²b + 3ab² - b³ ) - x = a³ - b³

⇒ -x = a³ - b³ - (a³-3a²b + 3ab² - b³ )

⇒ -x = a³ - b³ - a³ + b³ + 3a²b - 3ab²

⇒  x = 3ab² - 3a²b

Hence  3ab² - 3a²b  is to be subtracted from a3 - 3a2b + 3ab2 - b3 to get a3 - b3