When solving by using the quadratic formula, what are the steps to follow?
a.
factor, find values for a, b,c, subtract
c.
substitute into the formula, find values for a, b,c, simplify
b.
simplify, find values for a, b,c, factor
d.
find values for a, b,c, substitute into the formula, simplify

Hence, option: d is the correct answer.

When solving by using the Quadratic Formula,  the steps we need to follow is:

     d.    find values for a,b,c, substitute into the formula, simplify.

We know that the general equation of a quadratic formula is given by:

where a,b and c are real numbers.

and the solution of the quadratic equation is given by the formula as:

Hence, in order to solve the quadratic formula the steps that we need to follow is:

      1)  First we need to classify a,b and c from the equation.

      2)  Then put the value of a,b and c in the formula.

      3)  Lastly simplify the expression.          

correct answer:

b.(19,-2)