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19 August, 05:47

What number should be added to the expression x2 + 4x to change it into a perfect square trinomial?

A: 1

B: 2

C:4

D:8

+4
Answers (2)
  1. 19 August, 06:08
    0
    I would believe it would be B. 2, then both sides with have two and it will be a square
  2. 19 August, 07:50
    0
    +4 cause x^2+4x+4 = (x+2) ^2
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