Question

Rezolvați in R inecuatia f(x)+2x-5 <_ f(4), unde f:R-> R, f(x)= -x+6

Answer 1

$-x+6+2x-5 \leq -4+6$

$x+1 \leq 2$

$x \leq 2-1$

$x \leq 1$

x∈(-∞, 1]