X⁵+4x⁴/x⁴+4x³=x⁴(x+4)/x³(x+4)=x x=-0.6 x⁵+4x⁴/x⁴+4x³=-0.6
(x+13)(x-7)²(x-15)>0
+ - - +
__________-13______________7____________15__________
x∈(-∞;-13)∨(15;+∞)
<span>27 х3=-1
</span>
<span>х3=-1/27</span>
X=-1/3
3x - 6 => 3(x - 2)
3x - 30m + 1 => 3(x - 10m) + 1
-10 - 30m => -10(1 + 3m)
21mn + 7n => 7n(3m + 1)
x^2 - 2x => x(x - 2)