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If a+b=7, and ab =12,then the value. of a³+b³ is |
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Answer» mula:- a^3+b^3=(a+b)^3-3ab(a+b)a^3+b^3=(7)^3-3×12(7) =7×7×7-3×12×7 =343-252 =91 |
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