Which polynomial represents the area of the rectangle? (pic shown below) a. 4x^2+2x-6 b.4x^2-2x-6 c.4x^2-6

The formula of an area of a rectangle:

w - width

l - length

Therefore we have:

A = (4x - 6)(x + 1)

use distributive property (a + b)(c + d) = ac + ad + bc + bd

A = (4x)(x) + (4x)(1) + (-6)(x) + (-6)(1) = 4x² + 4x - 6x - 6

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.