Задача · 10 класс Задача №3648933
А
А
- \(-x^2+3x-4=-(x-\frac32)^2-\frac74<0\)
\(\boxed{x\in\mathbb R}\)
\(-x^2+4x-7=-\bigl((x-2)^2+3\bigr)<0\)
\(\boxed{\varnothing}\)\(x^2+12x+36=(x+6)^2\ge0\)
\(\boxed{x\in\mathbb R}\)\(16x^2-8x+1=(4x-1)^2\le0\)
\(\boxed{x=\frac14}\)\(x^2+4x-5=(x+5)(x-1)>0\)
\(\boxed{x\in(-\infty;-5)\cup(1;+\infty)}\)\(x^2\le4\)
\(\boxed{x\in[-2;2]}\)
