Questions and answers by

Help-me-Please

Questions (2)

The textbook answer is -80Question: find (3a+4b)(2b+4a) if a= -i-3j+k and b=2i+4j-5k What I did: =6(a)(b) - 12|a|^2 + 2|b|^2 -
1. 1 answer
2. 540 views
If a = 3i + 2j and b=-2i+j calculate|a+b| a and b are vectors and i and j have the arrow pointy thing above it instead of the
1. 1 answer
2. 543 views