Which of the following choices is the length of AB if A (-3, -2) and B (5, -4)?

\sqrt{68}

Step-by-step explanation:

Using the distance formula, you can find that the distance between these two points is:

This is based on the Pythagorean Theorem, since you can imagine making a right triangle between these two points and the distance between them being the hypotenuse. Hope this helps!

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8