###### Exercise6

Is $$-1$$ a solution for $$x$$ in the inequality $${-5x^{2}-x}\le{4x+9}\text{?}$$ Evaluating the left and right sides gives:

 $${-5x^{2}-x}$$ $$\le$$ $${4x+9}$$ $${}\stackrel{?}{\le}{}$$

So $$-1$$

?

is

is not

a solution to $${-5x^{2}-x}\le{4x+9}\text{.}$$

in-context