вычислите квадрат и куб числа: а) 1/2; б) 2/5; в) 1/3; г) 5/2; д) 1 целая 1/2; е) 3 целых 1/3

Вычислим квадрат и куб чисел:

а) 1/2;

(1/2) ^2 = 1^2/2^2 = 1/4;

(1/2) ^3 = 1/8;

б) 2/5;

(2/5) ^2 = 2^2/5^2 = 4/25;

(2/5) ^3 = 4/25 * 2/5 = 8/125;

в) 1/3;

(1/3) ^2 = 1/9;

(1/3) ^3 = 1/27;

г) 5/2;

(5/2) ^2 = 25/4;

(5/2) ^3 = 125/8;

д) 1 1/2 = 1 + 1/2 + 3/2;

(3/2) ^2 = 9/4;

(3/2) ^3 = 27/8;

е) 3 1/3 = 10/3;

(10/3) ^2 = 10^2/3^2 = 100/9;

(10/3) ^3 = 10^3/3^3 = 1000/27.