ANSWER
[tex]x \leqslant - 3,x \geqslant 4[/tex]
EXPLANATION
The given inequality is
[tex](x - 4)(x + 3) \geqslant 0[/tex]
To solve this inequality, we need to solve the corresponding equation:
[tex](x - 4)(x + 3) = 0[/tex]
This implies that
[tex]x = - 3 \: or \: x = 4[/tex]
We now plot the solutions of the equation and use it to solve the corresponding inequality as shown in the attachment.
These values divide the number line into 3 regions.
The region(s) that satisfies the inequality is the solution set
From the graph the solution is
[tex]x \leqslant - 3,x \geqslant 4[/tex]