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Solve the System by Using the Inverse of the Coefficient x−2y+3z=−4Y−z+w=7−2x+2y−2z+4w=142y−3z+w=14\begin{array}{rr} x-2 y+3 z & =-4 \\Y-z+w & =7 \\-2 x+2 y-2 z+4 w & =14 \\2 y-3 z+w & =14\end{array}

Question 32

Multiple Choice

Solve the system by using the inverse of the coefficient matrix.
- x−2y+3z=−4Y−z+w=7−2x+2y−2z+4w=142y−3z+w=14\begin{array}{rr} x-2 y+3 z & =-4 \\Y-z+w & =7 \\-2 x+2 y-2 z+4 w & =14 \\2 y-3 z+w & =14\end{array}


A) (5,−2,−5,4) (5,-2,-5,4)
B) (6,−4,−6,6) (6,-4,-6,6)
C) (4,−3,−4,5) (4,-3,-4,5)
D) (5,−3,−5,5) (5,-3,-5,5)

Correct Answer:

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