Matrix Practice
1. 2 [
1 2
2
1
] + 3[
]
3 4
−1 −2
2
2. Given that 𝑎 [
1
3. [
2
−3
𝑥
6
]=[
𝑦
4
2
−5
]∗[ ]
−1
4
27
] for some real number a, what is x + z?
𝑧