Someone help me with this pls

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

For which rational expression is -2 an excluded value of x?

Find the greatest common factor of -30x 4 yz 3 and 75x 4 z 2.