Решите неравенство: -5x^2+45>0
0 <=> -5x^2>-45 <=> " alt="-5x^2+45>0 <=> -5x^2>-45 <=> " align="absmiddle" class="latex-formula"> -3 -3
- 5x² + 45 > 0
- 5x² > - 45
x² < 9
-3 < x < 3
x ∈ (-3; 3)
0 <=> -5x^2>-45 <=> " alt="-5x^2+45>0 <=> -5x^2>-45 <=> " align="absmiddle" class="latex-formula">
-3 -3