How do I solve this algebraically? (Please describe steps)

y = x - 3
y = x^2 - x - 6

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.

The estimated number of people to attend the last bengals game of the season was 2000. the actual number of fans attending was 1200. by what percent did the estimate differ from the actual?

Find the values of y: 3y^3(y^2+ 2/3y)=0