What number should be added to the expression x^2 + 12x to change it into a perfect square trinomial? Is 36 correct?

asked Apr 18, 2016 175k views

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$x^(2) +12x+n^2 = x^(2) +2*6*x+n^2 \Rightarrow n=6. \\ \\ The~answer~is~36. \\ x^(2) +12x+36=(x+6)^2/$

Roy Sonasish answered Apr 24, 2016

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