What is order of operations for 8(7+2)+6(8-7)

If the discriminant if a quadratic equation is 4 which statement describes the roots?

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

Can anyone me get through my algebra 2 class? the only class i need to graduate..