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presasjenifer1
20.01.2020 •
Mathematics
Given the matrices aa and bb shown below, find -a-\frac{1}{4}b.−a−
4
1
b.
a=\begin{bmatrix} 0 & 3 \\ 2 & -1 \\ 0 & 3 \\ -5 & -2\end{bmatrix}\,\,\,\,b=\begin{bmatrix} -28 & 8 \\ -4 & -8 \\ 20 & 40 \\ 0 & 48\end{bmatrix}
a=
⎣
⎢
⎢
⎡
0
2
0
−5
3
−1
3
−2
⎦
⎥
⎥
⎤
b=
⎣
⎢
⎢
⎡
−28
−4
20
0
8
−8
40
48
⎦
⎥
⎥
⎤
Solved
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Ответ:
To show my work, here.
1. Expand (6x −6= 4x − 8)
2. Subtract 4x from both sides (6x−6−4x=−8)
3. simplify 6x - 6 - 4x to 2x - 6 ( 2x - 6 = -8)
4. Add 6 to both sides ( 2x = -8 + 6)
5. simplify -8 + 6 to -2 (2x = -2)
6. divide both sides by 2 (x = -1)