(1-2x)(x+2)>0 нужно решение. Created by Sidorovich. matematika-ru

(1-2x)(x+2)>0 нужно решение...

djpro1337 (1-2x)(x+2)>0
x+2-2x(во второй степени)-4х
-3х+2х(во второй степени)+2>0
Неравенство НЕВЕРНО.

1 votes Thanks 0

keevie (1-2x)(x+2)>0
$\left \{ { \left \{ {{1-2x\ \textgreater \ 0} \atop {x+2\ \textgreater \ 0}} \right. \atop { \left \{ {{1-2x\ \textless \ 0} \atop {x+2\ \textless \ 0}} \right.}} \right.$
$\left \{ {{ \left \{ {{x\ \textless \ 0.5} \atop {x\ \textgreater \ -2}} \right.} \atop { \left \{ {{x\ \textgreater \ 0.5} \atop {x\ \textless \ -2}} \right.}} \right.$
x∈(-2, 0.5)

2 votes Thanks 1

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