Khan Academy
How to Rationalize a Denominator, Exponent Expressions and Equations, Algebra I
"Sal, why do we care? Why must we rationalize denominators?" Acknowledging these (possibly pleading) concerns, Sal explains the reasons behind rationalizing a denominator before demonstrating how to do it several times. Though he admits...
Khan Academy
Khan Academy: Algebra: Rationalizing Denominators of Expressions
Video demonstrates how to rationalize and simplify an expression that has a binomial in the numerator and square root of 8 in the denominator. [4:58]
Khan Academy
Khan Academy: Rationalizing Denominators of Expressions
Video demonstrates how to rationalize and simplify an expression that has a binomial in the numerator and square root of 8 in the denominator. [4:58]