Use the gcf of the terms to write the expression as the product of two factors with integer coefficients.

-2x3 - 4x2 + 4x
a. x(-2x2 - 4x + 4)

b. -2x(x2 + 2x - 2)

c. x(-2x2 + 2x - 2)

d. -2x(-2x2 + 2x - 2)

-2x^3 - 4x^2 + 4x

-2x^3 = -2x(x^2)

-4x^2 = -2x(2x)

4x = -2x(-2)

so GCF= -2x

-2x3 - 4x2 + 4x = -2x(x^2 + 2x - 2)

answer is B. -2x(x^2 + 2x - 2)

d. millimeters per hour.

step-by-step explanation:

we are given that,

carlo used a rain gauge to measure the amount of water his lawn is receiving from the sprinklers.

since, according to the options, we see that,

water cannot be measured by 'miles per hour', 'meters per second' and 'grams per seconds'.

we get that, the water can be measured by 'millimeters per hour'.

hence, the appropriate rate for describing the amount of water is 'millimeters per hour'.

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.