Question

Find the specified scalar.

Answer 1

hello

the answer to the question is:

u × v + u × w = u(w + v) = (5i - j)((i + 7j) + (6i + j)) =

(5i - j)(7i + 7j) = 35i + 35ij - 7ij - 7j²

= - 7j² + 28ij + 35i