Subtract with One Scalar - Full Matrix to Values

Question

Find the result of A - 4B, or choose [undefined] if it cannot be computed.

$$A = \left[ {\begin{array} {cccc} 8 & -5 & -1 & 2 \ 6 & 1 & 5 & -6 \end{array}  } \right] \qquad B = \left[ {\begin{array} {ccc} -6 & -3 & -7 \ 3 & -8 & 9 \ 5 & -4 & 4 \end{array}  } \right] \[8pt] A - 4B = \left[\, ? \,\right]$$

Accepted Answer

$$	ext{[undefined]}$$

Answer

$$\left[ {\begin{array} {cccc} -6 & -2 & -1 & -4 \ 2 & -5 & 4 & 0 \end{array}  } ight]$$

Answer

$$\left[ {\begin{array} {ccc} 32 & 7 & 27 \ -6 & 33 & -31 \end{array}  } ight]$$

Answer

$$\left[ {\begin{array} {ccc} 3 & -1 & 4 \ -2 & -5 & -9 \ -8 & 1 & 6 \end{array}  } ight]$$

Practice: Matrices

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Subtract with One Scalar - Full Matrix to Values