Question

решите неравенства 6x-x^2>0

Answer 1

$6x - x {}^{2} > 0 \\ - x {}^{2} + 6x > 0 \\ - ( - x {}^{2} + 6x) < - 0 \\ x {}^{2} - 6x < 0 \\ x(x - 6) < 0$
x € (0;6)