I believe the answer would be
![x = ( - 5 + √(505) )/(12) and \: \frac{ - 5 - \sqrt[]{505} }{12}](https://img.qammunity.org/2019/formulas/mathematics/high-school/jylmuk7syaq6m9y8z9m0w0tyjehhfnvfr9.png)
Good Luckkk.:-)
Step 1 move all terms to one side
example: 6x^2+5x-20=0
step 2 use the quadratic formula.
How: In general ax^2+c=0, there exists two solutions.
Next: In this case a=6 , b=5, c= -20
Last step: which is Simplify leaves you with the top answer!