Khan Academy Static

Determine whether various combinations of rational and irrational numbers are rational or irrational themselves.

7583_Recognizing_rational_irrational_expressions_unknowns_.html

7579_Proof_sum_product_of_two_rationals_is_rational.html

7581_Proof_sum_of_rational_irrational_is_irrational.html

7580_Proof_product_of_rational_irrational_is_irrational.html

7582_Recognizing_rational_irrational_expressions.html

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