Factor the expression. Use the fundamental identities to simplify, if necessary.

Ineed with question three. i don't understand how i'm supposed to achieve 3 marks.

Robert plans to make a box-and-whisker plot of the following set of data. 27, 14, 46, 38, 32, 18, 21 find the lower quartile, the median, and the upper quartile of the set? lower quartile: 19.5; median: 29.5; upper quartile: 42 lower quartile: 14; median: 27; upper quartile: 46 lower quartile: 18; median: 27; upper quartile: 38 lower quartile: 16; median: 29.5; upper quartile: 42

Which is an example of using the distributive property to multiply -5x^3(3x^2+3x-1) ?