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Please Read the below formula and concept every time before you start to solve the questions.
  1. Some Basic Formula:
    1. (a + b)(ab) = (a2b2)
    2. (a + b)2 = (a2 + b2 + 2ab)
    3. (ab)2 = (a2 + b2 – 2ab)
    4. (a + b + c)2 = a2 + b2 + c2 + 2(ab + bc + ca)
    5. (a3 + b3) = (a + b)(a2ab + b2)
    6. (a3b3) = (ab)(a2 + ab + b2)
    7. (a3 + b3 + c3 – 3abc) = (a + b + c)(a2 + b2 + c2abbcac)
    8. When a + b + c = 0, then a3 + b3 + c3 = 3abc.

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