It is called a difference of squares because there are two things squared being subtracted. You can recognize it when there are two terms, subtraction between the two of them, and you know the square root of both
Take the cross product, then normalize the result.

This has norm

and so a unit vector orthogonal to both given vectors is

An equally correct answer would be the negative of this vector, since

.
Answer:
a
Step-by-step explanation:
You can only be going 70 mph, or below (to a certain point) or you'll get pulled over / get a ticket.
Answer:
15x+6
Step-by-step explanation: