SHORTCUT FOR BINOMIAL THRORAM??????
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hyy mate ✌️
General Rule : If we are trying to get expansion of (a - b)ⁿ, we have to take positive and negative signs alternatively staring with positive sign for the first term. Note : This rule is not only applicable for power "4". This rule is applicable for any value of "n" in (a - b)ⁿ.
hope it will help you ❣️❣️
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there is no Short cut for hard work man
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