What is a shape or a figure

Which statement best describes a square? a. a special rectangle that has four right angles b. a special trapezoid that has four sides of equal length c. a special rectangle that has four sides of equal length d. a special trapezoid that has four right angles

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

Ineed in figuring out this problem.