Brainliest ! part a: the area of a square is (9x^2 + 24x + 16) square units. determine the length of each side of the square by factoring the area expression completely. show your work. (5 points) part b: the area of a rectangle is (16x^2 − 25y^2) square units. determine the dimensions of the rectangle by factoring the area expression completely. show your work. (5 points)

Sketch the vector field vector f( vector r ) = 8vector r in the xy-plane. select all that apply. the length of each vector is 8. the lengths of the vectors decrease as you move away from the origin. all the vectors point away from the origin. all the vectors point in the same direction. all the vectors point towards the origin. the lengths of the vectors increase as you move away from the origin.