Determine whether various combinations of rational and irrational numbers are rational or irrational themselves.
1929_Recognizing_rational_irrational_expressions.html
1927_Proof_product_of_rational_irrational_is_irrational.html
1926_Proof_sum_product_of_two_rationals_is_rational.html
1930_Recognizing_rational_irrational_expressions_unknowns_.html
All video content by Khan Academy is under their license: CC by NC SA
Website created using Khan Academy Static Downloader