prove or disprove. Write your choice on the line. You may not do extra for bonus here. You must use full sentences to receive full credit. You will likely use some equations. Just be sure to connect...

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Extracted text: prove or disprove. Write your choice on the line. You may not do extra for bonus here. You must use full sentences to receive full credit. You will likely use some equations. Just be sure to connect everything with sentences. (b) For all rational numbers a and b, a is rational.