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Solve the System of Equations by Using the Inverse of the Coefficient

Question 18

Multiple Choice

Solve the system of equations by using the inverse of the coefficient matrix.
- 2x+4y+z=−104x−4y−z=−85x+y+4z=−1\begin{array}{l}2 x+4 y+z=-10 \\4 x-4 y-z=-8 \\5 x+y+4 z=-1\end{array}


A) (−3,4,−2) (-3,4,-2)
B) (−3,−2,4) (-3,-2,4)
C) (4,−2,−3) (4,-2,-3)
D) No inverse, no solution for system

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