What is this function written in vertex form?
The image shows a geometric representation of the
function f(x) = x2 - 2x - 6 written in standard form.
Of(x) = (x-1)2 - 7
Of(x) = (x +1)2-7
Of(x) = (x-1)2-5
O f(x) = (x +1)2-5

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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.

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