Divide: 5a^6+60a^5-40a^4/20a^4

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a^2/4 + 3a - 2

I hope this helped!

<!> Brainliest is appreciated! <!>

- Zack Slocum

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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.