Are the following expressions equivalent

Solve each quadratic equation by factoring and using the zero product property. [tex]x^2+6x+8=0[/tex]

Could someone me with this question i’ve been stuck on it for 20 minutes

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth