<span>x^3+6x^2+((28x^2+2x-10)/(x-5))<=2
(x^4+6x</span>³-5x³-30x²+28x²+2x-10)/(x-5)-2≤0
(x^4+x³-2x²+2x-10-2x+10)/(x-5)≤0
(x^4+x³-2x²)/(x-5)≤0
x²(x²+x-2)/(x-5)≤0
x²+x-2=0⇒x1+x2=-1 U x1*x2=-2⇒x1=-2 U x2=1
x²(x+2)(x-1)/(x-5)≤0
x=0 x=-2 x=1 x=5
_ + + _ +
-------------[-2]--------------[0]--------------[1]---------------(5)--------------
x∈(-∞;-2] U [1;5) U {0}
<span>решите систему неравенств
{3y<21 {y<7 /////////////////////////////////////////////(7)----------------
{4-y>0 { y<4 ////////////////////////////(4)------------------------------
</span> y<4
22 ч 58 мин 35 с
4 сут 14 ч 30 мин
7 ц 91 кг
0 в 80 лет
(45968+114711):52+(20229+25719):84=3637
1)45968+114712=160680
2)20229+25719+45948
3)160680:52=3090
4)45948:84=547
5)3090+547=3637
342×72:16-1347+15276:19=996
1)342×72=24624
2)24624:16=1539
3)15276:19=804
4)1539-1347=192
5)192+804=996