out the following cartesian product a) A*B,  b) B*A

Suppose the second column of B is all zeros.  What can you say about the second column of AB?

Show that A ( -4,3) , B ( -2,6) , C ( 1,4) and D ( -1,1) are verticies of a square . What is the perimeter and the area ?

1a.) 0x**3  + 9x**3  1b.) 4X**3  - 9x**5  1c.) (3x   + 1x**3) + 2(9x**3 +(-3x)) 1d.) (4r**7)/(4r**8) 1e.) 6(x**2)9(t**3)4(x**4) + (4r**3)/2r  1f.) 4(3t**2)2(y**2) - 5y**3/y**0 1g) ((90r**2)(2r**4))(-2r**4)