Question

solve using the quadratic formula,simplify.

x2 − 12x = 3

Answer 1

x = (12 +/-sqrt(144-4(1)(-3))) / 2

x = (12 +/- sqrt(156)) / 2

x = 12.244998 or x = -0.244998

Answer 2

Im trying to figure out how to do this correctly, my book has an answer in the back that says
[6\pm \sqrt39\] but im not sure how to get that.

Answer 3

\[6\pm \sqrt39\]