Dividindo um número x por um número y obtem-se 2, determine o valor de x e y sabendo que eles são números primos entre si

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Which of the following expressions is equal to 2x^2+8

The bolo cavern outside of vandalia is 421 ft below sea level. a little more than75 miles away. mt owens is 7295 feet above sea level. what is the difference in elevation between the bolo cavern and mt owens?