Answer the question at the bottom! !

Perfect squares are unlike the square roots above, because, when simplified, they become whole numbers.

For example:

√4 = 2

√16 = 4

√64 = 8

etc

hope this helps

step-by-step explanation:

answers available in this download

(pearson%2c%25202012)%2520bbs.pdf& usg=aovvaw1obmtxnfghfgxhx0urh_je

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.