Express (2x-4)(x+6) as a trinomial

Solve the x in the equation x^2+14x+17=-96

Solve each equation using the quadratic formula. find the exact solutions. 6n^2 + 4n - 11

This is a map of the mars exploration rover opportunity predicted landing site on mars. the scale is 1cm : 9.4km. what are the approximate measures of the actual length and width of the ellipse? i mostly need to know how to set it up : )