X+22<(x+2)^2
x+22<x^2+4x+4
x-x^2-4x<4-22
-x^2-3x< -18
x^2+3x> 18
Ответ: x(4;+бесконечность)
1)х=3231,4/6,04=535
2) у=32,314/5,35=6,04
3) а=216,55/7,1=30,5
4)х= 7,7418/2,07=3,74
1) 1 1/2 * 1 1/3 * 1 1/4 *1 1/5 * 1 1/6 - 1/2 = 3/2 * 4/3 * 5/4 * 6/5 * 7/6 - 1/2 =
(3/2 * 4/3) *(5/4 * 6/5) * 7/6 - 1/2 = 2 * 3/2 * 7/6 - 1/2 = 3 * 7/6 - 1/2 = 7/2 - 1/2 = 6/2 = 3
2) 1 1/4 * 1 1/5 * 1 1/6 * 1 1/7 * 1 1/8 - 1/4 = 5/4 * 6/5 * 7/6 * 8/7 * 9/8 - 1/4 =
5/4 *(6/5 * 7/6) * (8/7 * 9/8)- 1/4 = 5/4 * 7/5 * 9/7- 1/4 = 5/4 * (7/5 * 9/7) - 1/4 =
5/4 * 9/5 - 1/4 = 9/4 - 1/4 = 8/4 = 2