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"The beauty of symbolic equations is that it's much easier to … see a problem at a glance": How we moved from words and pictures to thinking symbolicallySo "algebra" was communicated in cumbersome word problems or increasingly complicated diagrams ... "completing the square," the method you might have learned in school to solve quadratic equations ...
You may be asked to solve problems using ... We can now fill this in on our diagram. If we now look at the Band Y circle, we have all the sections complete except one. Now add up the numbers ...
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