Question

Any ideas what to do now?
x³+3x - 4 ≥ 0

Answer 1

\[x(x^2+3)-4\ge0\]

Answer 2

so \[x(x^2+3)\ge4\]

Answer 3

then \[x \in[1,+\infty)\]

Answer 4

What happens between x(x2+3)≥4 and x∈[1,+∞)

Answer 5

Okay :D thanks