Answer:
 shows correct substitution of the values a, b, and c  from the given quadratic equation    into quadratic formula.
Step-by-step explanation:
Given: The quadratic equation 
We have to show the correct substitution of the values a, b, and c from the given quadratic equation    into quadratic formula.
The standard form of quadratic equation is  then the solution of quadratic equation using quadratic formula is given as 
Consider the given  quadratic equation 
Comparing with general  quadratic equation, we have
a = -3 , b = -2 , c = 6
Substitute in quadratic formula, we get,
Simplify, we have,
Thus,  and x_{2}=\frac{2-\sqrt{76} }{-6}
Simplify, we get,
Thus,  shows correct substitution of the values a, b, and c  from the given quadratic equation    into quadratic formula.