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Adding and subtracting rational expressions
Well, rational expressions are just algebraic expressions formed by dividing one expression by another. In this tutorial, we'll see that, even though they may look hairy, adding and subtracting rational expressions involves most of what we know about adding and subtracting numeric fractions.
Adding and subtracting two expressions with common denominator and each of the form Ax/B or A/Bx.
Adding and subtracting expressions with a common denominator, where each is of the form (Ax+B)/(Cx+D).
Adding and subtracting multiple variable expressions with the same denominators where each is an expression containing up to two terms and four variables.
U11_L1_T3_we2 Adding and Subtracting Rational Expressions 2
Subtracting Rational Expressions
Simplifying First for Subtracting Rational Expressions
Adding and subtracting two expressions with different denominators, where each is of the form Ax/B or A/Bx.
Adding and Subtracting Rational Expressions
U11_L1_T3_we3 Adding and Subtracting Rational Expressions 3
Sal shows how to rationalize the denominator of the expression (16+2x^2)/(√8).