Rozwiąż rówAnia :)proszę o pomoc ;) do dziś proszę .będzie naj .

[latex]a) 4x^2 ge 4x-1\ 4x^2-4x+1ge 0\ (2x-1)^2ge 0\ 2x-1=0\ x=-frac{1}{2}\ \ xin (-infty,-frac{1}{2} extgreater cup extless -frac{1}{2},+infty) lub xin mathbb{R}\ \ \ b)\ 9x^2+12x+4 extgreater 0\ (3x+2)^2 extgreater 0\ 3x+2=0\ x=-frac{2}{3} \ \ xin(-infty, -frac{2}{3})cup(-frac{2}{3},+infty) lub xin mathbb{R} setminus {-frac{2}{3}}[/latex] [latex]c)\ 2x^2-3x+4ge 0\ Delta = (-3)^2-4cdot2 cdot 4 = 9-32=-23\ \ xin (-infty, +infty) lub x in mathbb{R}\ \ d)\ 8x-1 extgreater 16x^2\ 16x^2-8x+1 extless 0\(4x-1)^2 extless 0\ 4x-1=0\ x=frac{1}{4}\ \ x in o\ \ \ e)\ 9+25x^2le 30x\ 25x^2-30x+9le 0\ (5x-3)^2le 0\ 5x-3=0\ x=frac{3}{5}\ \ xin {frac{3}{5}}[/latex] [latex]f)\ x(x+6)le 3(4x-3)\ x^2+6xle12x-9\ x^2-6x+9le 0\ (x-3)^2le 0\ x-3=0\ x=3\ \ xin {3}[/latex]