Find the separation vector r from the source point (2,8,7) to the field point (4,6,8). determine its magnitude (r), and construct the unit vector ˆr.

magnitude =3 unit vector

Step-by-step explanation:

We have given source point

And the field point

Resultant vector

The resultant vector

Magnitude of the vector

Now we have to find the unit vector

So unit vector

the correct answer option is (2x-3)(2x+3).

step-by-step explanation:

we are given the following expression and we are to factorize it:

we are to find such factors that when multiplied they give a result of 36 (9 x 4 = 36) and when added they give a result of 0.

the two such factors of 36 are negative six and postive six.

factorizing the given expression to get:

therefore, the correct factorization of is (2x-3)(2x+3).