Stabilize a state of equilibrium

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I'm having trouble solving a control theory problem.
I have a differential equation: $$\dot{x}=-2x+Cx\gamma(t)$$ And I know that $|\gamma(t)|\le1$
Can I make the state of balance stable by choosing $C=0\ or\ C=0.5\ or\ C=1\ or\ C=2$? Or this block uncontrollable?