(X^2+3x-8) divide (x-5)

Whats are the trickiest steps to do when adding or subtracting rational expressions? how does knowledge of rational numbers u in adding and subtracting rational expressions?

Find measure angle 1 and measure angle 3 in the kite the diagram is not drawn on the scale

You are riding your bike and notice the square sign above. you mentally draw a straight line from point a to c. describe the angle relationship between dca and bca