V10) 47° +94 - 400V.
V15) gy" - by + < 0;
✓ 18.6. Peute HepaBeHCTBO:
1) 5x2 - 7x - 6 > 0;
V 3) - x2 - 2x - 6 >0;
5) 5x2 - 6 < 0;
V 7) 5x2 - x + 6 < 0;
2) 3x2 - 8x +11 < 0;
4) - 2x2 - 9x + 11 < 0;
6) x2 - 7x + 6 > 0;
8) - 7x2 + 12x + 4 > 0;
11) ** ***-->0;
10) *** *10*-< 0;
12) 1** - 2 * +1} > 0.
TOT
+
co
101
The towel on the wall… It’s our ancient custom. There was not a single Ukrainian house , which would not be decorates with towels. A house without a towel was compared with a family without children. A towel symbolized not only aesthetic taste , it was a face of a house and of a hostess. The towels proved that the hostess was tidy and hard-working.
A newly-born child was handed with the towel, guests were met with bread and salt on the towel. A son , a husband, a father were seen off with the towel. While getting married the newly-formed family was standing on a towel too. Bread and salt on an embroidered towel were a symbol of hospitality of the Ukrainian people. To take the towel , to kiss bread symbolized unity, peace, love , understanding among people. This custom has a good tradition in our country.
Towel were used in different ceremonies and in everyday life as well: for wiping a face and hands, for drying dishes, for decorating the houses, for presenting dear people. The ornaments and colours of towels were different in different regions. A lot of songs about the embroidered towel have been created in Ukraine. Объяснение:
х1+х2=5 у1+у2=-8 D=9+4*4*7=121=11²
х1*х2=6 у1*у2=16 х1=(3+11)/14=1 х1=1
х1=3 у1=4 х2=(3-11)/14=8/14=4/7 х2=4/7
х2=2 у2=4
8х²+5х-3=0
D=25+4*3*8=121=11²
х1=(-5+11)/16=6/16=3/8 х1=3/8
х2=(-5-11)/16=-1 х2=-1