Operations with complex numbers i+6i

Using two or more complete sentences, describe how you can find a vector parallel to b=-2,3

What is the length of the segment, endpoints of which are intersections of parabolas y=x^2− 11/4 x− 7/4 and y=− 7 /8 x^2+x+ 31/8 ?

Select all of the following expressions that are equal to 2.5.