SOLUTION: 4(x-3)=x(x+1)

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Question 693630: 4(x-3)=x(x+1)
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
Distribute
4x - 12 = x^2 + x
Combine
0 = x%5E2+%2B+x+-+4x+%2B+12
0 = x%5E2+-+3x+%2B+12
x = %28-%28-3%29%2B-sqrt%28-3%5E2-4%281%29%2812%29%29%29%2F2
...
x = %283%2B-sqrt%289-48%29%29%2F2
...
x = %283%2B-sqrt%28-39%29%29%2F2
...
x = %283%2B-i%2Asqrt%2839%29%29%2F2
...
Two solutions
x = 3%2F2+%2B+%28i%2Asqrt%2839%29%29%2F2
AND
x = 3%2F2+-+%28i%2Asqrt%2839%29%29%2F2
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