14 * (1/2) ^2+131/2 5 (1/5) ^2+14*1/5

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Гость

Математика

2 апреля, 16:58

14 * (1/2) ^2+131/2 5 (1/5) ^2+14*1/5

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Gadzhit · Answer 1

14 * (1/2) ^2+13*1/2 = 17.

1) (1/2) ^2 = 1 / 2 * 1 / 2 = 1·1 / 2·2 = 1 / 4.

2) 14 * 1 / 4 = 14·1 / 4 = 14 / 4 = 7·2 / 2·2 = 7 / 2 = 1 + 3·2 / 2 = 3 1 / 2.

3) 3 1 / 2 + 13 1 / 2 = 16 + 1 / 2 + 1 / 2 = 16 + 1 + 1 / 2 = 16 2 / 2 = 16 + 1 = 17.

5 * (1/5) ^2+14*1/5 = 3.

1) (1/5) ^2 = 1 / 5 * 1 / 5 = 1·1 / 5·5 = 1 / 25.

2) 5 * 1 / 25 = 5·1 / 25 = 5 / 25 = 1·5 / 5·5 = 1 / 5.

3) 14 * 1 / 5 = 14 / 5 = 2 4 / 5.

4) 2 4 / 5 + 1 / 5 = 2 + 4 / 5 + 1 / 5 = 2 + 4 + 1 / 5 = 2 5 / 5 = 2 + 1 = 3.

14 * (1/2) ^2+13*1/2 5 * (1/5) ^2+14*1/5

14 * (1/2) ^2+131/2 5 (1/5) ^2+14*1/5