Why wont the opposite of a postive number never be a postitive number

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.

Find the solution(s) to x^2-14+49=0

Which statements are true about additional information for proving that the triangles are congruent check all that apply