Question 1163500
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2(x + 1) - (x^2 + 3x + 6) + x^2 = 0
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Simple algebra steps:

{{{2x+2-x^2-3x-6+x^2=0}}}

{{{2x-3x+2-6=0}}}

{{{-x-4=0}}}

{{{x+4=0}}}

{{{x=-4}}}