The quadratic x^2-6x+66 can be written in the form (x+b)^2+c, where b and c are constants. what is b+c?

All per-unit concepts rely on ratios,meaning,to provide a type of measurement

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Ibeg you to me 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?