Find the exact value for the problem in the picture

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.

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Type the correct answer in the box. use numerals instead of words. if necessary, use / for the fraction bar.