The expression 
expands to 
.
Hope this helps.
Place all of the rational numbers on a peace of paper the see which then u can see
+3, -6, +9 etc.
10, -11, 13
Domain means the values that can be used as a function's input. Since all real values of x will yield a real value of f(x), the domain is (-infinity, infinity).
B: From the origin, move 2 units back, 6 units left, and 7 units up.
