Please answer its a multiple question answer

Ascatterplot is produced to compare the size of a school building to the number of students at that school who play an instrument. there are 12 data points, each representing a different school. the points are widely dispersed on the scatterplot without a pattern of grouping. which statement could be true

Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?

Could somebody me with this radical simplification?