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how to solve the problem of square of trinomial


Sagot :

To get the square of a trinomial, you should:
      · square the first , second and last term
      · get the product of the first and second term and double it
      · get the product of the first and last term and double it
      · get the product of the last and second term and double it

Example:
        (a + ab +b)
²
  = a² + a²b³ +b² + a²b + ab + ab²