Question

СРОЧНО!!!!! Пж.............

Answer 1

Ответ:

Объяснение:

$g(x)=x^2+5x-6\\\\f(x)=5x-1\\\\g(f(x))=(5x-1)^2+5(5x-1)-6=\\\\=25x^2-10x+1+25x-5-6=25x^2+15x-10\\\\25x^2+15x-10\geq 0\\\\D=225+4*25*10=1225=35^2\\\\x_1=(-15-35)/50=-1\\\\x_2=(-15+35)/50=2/5=0.4\\\\(x+1)(x-0.4)\geq 0\\\\znaki:\\\\+++[-1]---[0.4]+++>x\\\\Otvet:x\in(-\infty;-1]\cup[0.4;+\infty)$