Respuesta :

Answer:

[tex]x^{2}[/tex] + 3x + 2x + 6

Step-by-step explanation:

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Answer:

Step-by-step explanation:

first remove the parenthesis and subtract twelve from each side :

x^2+5x+6-12=0

x^2+5x-6=0

factorize : (x+6)(x-1)=0

x+6=0 then x=-6

x-1=0 then x=1

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