3 x^2 - 12 x - 7 = 0
x = [ 12 +/- sqrt(144+84) ] / 6
= [ 12 +/- sqrt(228) ] / 6
= [ 12 +/- 2 sqrt(57) / 6
= [ 6 +/- sqrt(57) ] / 3
Use PARENTHESES !!!~!!~!!!!!
I can not tell whsat is your numerator.
how does 3x(x-4)+5=12
= x=6+sq rt 57-3 or x=6-sq rt 57/3
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