Solution:
The expression in the image is r * 3a^2 - 3.To proceed with solving or simplifying this expression, we need additional information or a specific question regarding what to do with it. As it stands, this expression cannot be simplified any further without additional context or instructions.If this is part of an equation, or if we are asked to evaluate it for given values of r and a, then more can be done. Otherwise, the expression remains as it is.