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Expand and simplify the expression
2((3x+3)(3x+3)) - (x+1)(x+1)? How is Sid doing????? Bill, Jane and Zoe!!!? What fraction of a reactant will remain after 17.9 seconds if the half-life is 64 seconds? White informative notes and diagrams of concentrated hotel dispersed? PLEASE HELP ME. COMPUTERING. I NEED HELP. JUST ONE QUESTION?