Let X, Y subset U. Suppose that n(X)= 22, n(Y)= 20, and n(X intersect Y)= 16. How many elements are in X’ U Y if n(U)= 40?

If u x = [1, -3,5], then x =

Expand (y-3x)*. A y + 12yx + 54y*x² +108y²x³ +81x* B. y +4y°x + 6y*x² + 4y²x³ + x* y - 12y x + 54y*x² – 108 y²x³ + 81 x* y* – 12y³x + 54 y²x² – 108 yx³ +81 x* - y + 4y'x +6y°x² + 4y%x³ + y*x* Not possible to expand. OAA OB.B C.C CEE OF F E.

9. Given u = (2, -2), v = (5,8), and w = (-4, 3), find each of the following. (a) u v (b) (u. v)w (c) u. (2v) (d) ||w||²