I - 0,3х л
II - 5/6 *0,3х
III - 0,3х-26 л
IV - 5/6 *0,3х + 10 л
Всего х л
0,3х+5/6 *0,3х+0,3х-26+5/6 *0,3х + 10=х
0,3х+0,25х+0,3х+0,25х-х=26-10
1,1х-х=16
0,1х=16
<span>х=160</span>
<span>2x5+5x4−13x3−13x2+5x+2=0</span>
<span>6x4-35x3+62x2-35x+6=0</span>
<span>х3 + 2x2 +
2х + 1 = 0.</span>
<span>2x2 - 7x + 6 = 0
</span> 3х-8=0
(2-с)2-с(с+4 )= 4-4с+с2-с2-4с = 4-8с = 8с-4 = 8*0,5 - 4 = 4-4=0
X^2+15x>0
x(x+15)>0
x=0 или x+15=0
х=-15
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-15 0
(-∞.-15) U (0,+<span>∞)</span>