2026 February(Z14) Math Question 33
Number Types & Properties
- matrices
B−A=[6741−1−4]B - A = \begin{bmatrix} 6 & 7 & 4 \\ 1 & -1 & -4 \end{bmatrix}B−A=[617−14−4]
B=(B−A)+A=[6741−1−4]+[−724−10−3]B = (B - A) + A = \begin{bmatrix} 6 & 7 & 4 \\ 1 & -1 & -4 \end{bmatrix} + \begin{bmatrix} -7 & 2 & 4 \\ -1 & 0 & -3 \end{bmatrix}B=(B−A)+A=[617−14−4]+[−7−1204−3]
=[−1980−1−7]= \begin{bmatrix} -1 & 9 & 8 \\ 0 & -1 & -7 \end{bmatrix}=[−109−18−7]
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