20pts alg 2 Why is it necessary to find the LCM of polynomials?

To divide polynomials
To square polynomials
To add or subtract polynomials.
To multiply polynomials

A, b, c, and d have the coordinates (-8, 1), (-2, 4), (-3, -1), and (-6, 5), respectively. which sentence about the points is true? a. a, b, c, and d lie on the same line. b. and are perpendicular lines. c. and are parallel lines. d. and are intersecting lines but are not perpendicular. e. and are parallel lines.

Witch represents the inverse of the function f(x)=1/4x-12

Worth 30 points! in this diagram, both polygons are regular. what is the value, in degrees, of the sum of the measures of angles abc and abd?