Question

решить неравенство $sqrt{1-4x} geq 2x+1$
пожлуйста быстреееее((((

Answer 1

$sqrt{1-4x} geq 2x+1, \ left [ {{ left { {{2x+1 textless 0,} atop {1-4x geq 0,}} right. } atop { left { {{2x+1 geq 0,} atop {1-4x geq (2x+1)^2}} right. }} right. left [ {{ left { {{2x textless -1,} atop {-4x geq -1,}} right. } atop { left { {{2x geq -1,} atop {1-4x geq 4x^2+4x+1,}} right. }} right. left [ {{ left { {{x textless -0,5,} atop {x leq 0,25,}} right. } atop { left { {{x geq -0,5,} atop {4x^2+8x leq 0,}} right. }} right. left [ {{ x<-0,5, } atop { left { {{x geq -0,5,} atop {x(x+2) leq 0,}} right. }} right. left [ {{ x<-0,5, } atop { left { {{x geq -0,5,} atop {-2 leq x leq 0,}} right. }} right.$
$left [ {{ x textless -0,5, } atop { -0,5 leq x leq 0, }} right. \ x leq 0, \ xin(-infty;0].$