Respuesta :

We are given three vectors each one has its own coordinates. We need to be careful when we multiply two vectors.

For example, b × c = (b1,b2,b3)×(c1,c2,c3) = (b1c1,b2c2,b3c3)

Finally a×(b×c) = (a1b1c1,a2b2c2,a3b3c3)

Good Luck