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13 March, 15:06

What number should be added to the expression x squared+2x to change it into a perfect square trinomial?

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Answers (2)
  1. 13 March, 15:18
    0
    You know that a perfect square trinomial is given by square of first term, twice the product of first and last terms and square of second term

    So we have x^2 that is square of x, 2x that is twice the product of x*1, the second term shoulf be 1, that is square of 1

    So your answer would be 1

    If you try (x+1) ^2 = x^2+2x+1
  2. 13 March, 15:24
    0
    The perfect square trinomial (x + 1) ² equals

    x² + 2x + 1

    Therefore the answer is to add 1 to the expression.

    Good luck
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