Question

решите неравенство
Х^2+10Х/2-5Х<0

Answer 1

$frac{x^{2}+10x}{2-5x} <0\\x(x+10)*(-5)(x-0,4)<0}\\x(x+10)(x-0,4)>0$

      -                        +                        -                     +

________₀______________₀__________₀__________

              - 10                            0                  0,4

x ∈ (- 10 ; 0) ∪ (0,4 ; + ∞)