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Formula of (a+b)^3. can anybody answer please? |
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Answer» a² + b³ + a³b^4 Step-by-step explanation: (a + B)³ like this : (a + b)(a + b)(a + b) Then group: : (a + b)(a + b) and split the first two bracket =a(a+b) +b(a+b) MULTIPLY = a² +AB + ab + b²-(after that, introduce the third bracket) =a² +ab + ab + b²(a + b)- open bracket = a² + ab + ab +ab² + b³ ∴ you COLLECT like terms = a² + b³ +ab +ab + ab² Then, final answer = a² + b³ + a³b^4 |
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