Question 693630
Distribute
4x - 12 = x^2 + x
Combine
0 = {{{x^2 + x - 4x + 12}}}
0 = {{{x^2 - 3x + 12}}}
x = {{{(-(-3)+-sqrt(-3^2-4(1)(12)))/2}}}
...
x = {{{(3+-sqrt(9-48))/2}}}
...
x = {{{(3+-sqrt(-39))/2}}}
...
x = {{{(3+-i*sqrt(39))/2}}}
...
Two solutions
x = {{{3/2 + (i*sqrt(39))/2}}}
AND
x = {{{3/2 - (i*sqrt(39))/2}}}

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