tolong ya yng nomor 15 tulis cara kerjanya

a = (1,-4,3)
b = (2,5,-1)
Q = (4,1,6)
P = (x,y,z)

PQ = 2a - 3b
[tex] \left[\begin{array}{ccc}4-x\\1-y\\6-z\end{array}\right] = \left[\begin{array}{ccc}2.1-3.2\\2.(-4)-3.5\\2.3-3.(-1)\end{array}\right] [/tex]
[tex] \left[\begin{array}{ccc}4-x\\1-y\\6-z\end{array}\right] = \left[\begin{array}{ccc}-4\\-23\\9\end{array}\right] [/tex]

diperoleh:
4-x = -4
8 = x

1-y = -23
24 = y

6-z = 9
-3 = z

jadi P (8,24,-3)

jawab (C)