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22 March, 13:33

What number should be added to the expression x2 + 2x to change it into a perfect square trinomial?

A:1

B:2

C:3

D:4

+2
Answers (2)
  1. 22 March, 14:53
    0
    1. In this way you get x^2+2x+1 which is (x+1) ^2.
  2. 22 March, 15:06
    0
    D 4

    d4

    D4

    D 4

    D:4

    nubiuhbj
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