Geometry nation section 4 topics 1-3 practice workbook please give answers really need it!!!

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

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