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Sagot :
Answer:
Step-by-step explanation:
Assuming the "2" after the "(x+2) is a square, the answer would be 3x^2+13x+19.
[tex](x+2)^2=x^2+4x+4\\3(x^2+4x+4)=3x^2+12x+12\\3x^2+12x+12+7=3x^2+12x+19[/tex]
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