Question

1.
If A = 3i – 4j and B = -i – 4j, calculate. A+B and A+B
1) 21–83, 8.1
2) 2i4j, 4.2
3) 2i, 3
4) 4j, 6
11​

Answer 1

Answer:

a+b=3i-4j-i-4j=2i-8j