Answer:
a= 2
Step-by-step explanation:
2 x 2=4
7-4=3
Answer:
2+6=8
x is replaced by 2 so 2+6=8
Step-by-step explanation:
The important rule to know is that when adding and subtracting matrices, first make sure the matrices have the same dimensions. In order words, you can add or subtract a 2x3 with a 2x3 or a 3x3 with a 3x3. However, you cannot add a 3x2 with a 2x3 or a 2x2 with a 3x3.
There is 2 answers + and -. The i represents a imaginary number... the answer is 6+2i, 6-2i.
