What is the solution to the following equation?

3x(x-4)+5=12

1 answer

3 x^2 - 12 x - 7 = 0

x = [12 +/- sqrt (144 + 84 ) } / 6

[ 12 +/- sqrt(228) ] /6

[ 12 +/- 2 sqrt(57) ]/6

2 +/- (1/3)sqrt(57)
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