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Solve the System {x+y+z=−2x−y+4z=144x+4y+4z=−14\left\{ \begin{aligned}x + y + z & = - 2 \\x - y + 4 z & = 14 \\4 x + 4 y + 4 z & = - 14\end{aligned} \right.

Question 107

Multiple Choice

Solve the system.
- {x+y+z=−2x−y+4z=144x+4y+4z=−14\left\{ \begin{aligned}x + y + z & = - 2 \\x - y + 4 z & = 14 \\4 x + 4 y + 4 z & = - 14\end{aligned} \right.


A) (4,−4,−2) ( 4 , - 4 , - 2 )
B) (4,−2,−4) ( 4 , - 2 , - 4 )
C) (−4,−2,4) ( - 4 , - 2,4 )
D) ∅\varnothing

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