Which shows the correct substitution of the values a b and c from the equation - 2 equals negative X Plus x squared minus 4 into the quadratic formula?

-2=-x+x square-4

firstly regroup the equation

x square-2x+x-2=0

x square-x-2=0

multiply the first term by the last term. (I. e x square multiply by - 2=-2x square)

product of factor = - 2x 1

sum of factor = - 2x+1 (x) = - 1

x square - 2x+x-2=0

open the bracket:

x (x-2) + 1 (x-2) = 0

x=1 or x=-2

Therefore; x=-1 or x=2