Răspuns :
Răspuns:
x=(2·5⁹²+2·5⁹¹+4·5⁹⁰)·(5³)⁴
x=2·5⁹⁰·(5²+5+2)·5¹²
x=2·5⁹⁰·(25+5+2)·5¹²
x=2·5⁹⁰·32·5¹²
x=64·5⁹⁰⁺¹²
x=2⁶·5¹⁰²
x=(2²)³·(5³⁴)³
x=(2²·5³⁴)³ este cub perfect
Răspuns:
x=(2·5⁹²+2·5⁹¹+4·5⁹⁰)·(5³)⁴
x=2·5⁹⁰·(5²+5+2)·5¹²
x=2·5⁹⁰·(25+5+2)·5¹²
x=2·5⁹⁰·32·5¹²
x=64·5⁹⁰⁺¹²
x=2⁶·5¹⁰²
x=(2²)³·(5³⁴)³
x=(2²·5³⁴)³ este cub perfect