1600=1156 * (1-P/100) ^2 - помогите решить

1156 * (1 - p/100) ^2 = 1600

(1 - p/100) ^2 = 1600/1156

(1 - p/100) ^2 = 400/289

(1 - p/100) ^2 = (20/17) ^2

(1 - p/100) ^2 - (20/17) ^2 = 0

(1 - p/100 - 20/17) (1 - p/100 + 20/17) = 0

#1

1 - p/100 - 20/17 = 0

- p/100 - 20/17 + 17/17 = 0

- p/100 - 3/17 = 0

- p/100 = 3/17

p/100 = - 3/17

p = - 300/17

p = - 17 целых 11/17

#2

1 - p/100 + 20/17 = 0

- p/100 + 37/17 = 0

- p/100 = - 37/17

p/100 = 37/17

p = 37/17 * 100

p = 3700/17

p = 217 целых 11/17

Ответ

- 300/17

3700/17