1/2*1/9 = 1/18
6/3 = 36/18
1/18+36/18 = 37/18 = 2 1/18
Вариант 3 и 4
1. При х=1, -4 ... х=3,-2
3a*(x +6) =3ax +18a
перемножаете
<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