Factor this expression completely. 16x4 + 56x2 + 49

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

The random variable x is defined as the number marking the sector in which the arrow lands when the spinner in the diagram is spun once.

Use pascal's triangle to find the missing values. x4 - 4xb + 6x2 - ax + 1