Which of the following is equivalent to the sum of the expression a^2 - 1 and a + 1?

Discussion in 'Calculator Requests' started by math_celebrity, Aug 28, 2019.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    Which of the following is equivalent to the sum of the expression a^2 - 1 and a + 1?

    A) a^2 + a
    B) a^3 - 1
    C) 2a^2
    D) a^3

    a^2 - 1 + a + 1

    The 1's cancel, so we're left with:
    a^2 + a - Answer A
     

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