Simplify : (a+b+c)2 +(a-b+c)2 +(a+b-c)2 . 27.Find the value of x3 +y3 -12xy + 64 when x+y =-4.
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waise toh mujhe kuch Aata toh nahi hai par aap ka Maan badhane ke liye main aapko Ek joke West Hoon Jise aap bahut bahut Haseen
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