Simplifying rational expressions and restrictions
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- For each rational expression:
i) determine the non-permissible values of the variable, then
ii) simplify the rational expression - For each rational expression:
i) determine the non-permissible values of the variable, then
ii) simplify the rational expression - For each rational expression:
i) determine the non-permissible values of the variable, then
ii) simplify the rational expression - The area of a rectangular window can be expressed as 4x2+13x+3, while its length can be expressed as 4x+1.
- For each rational expression:
i) determine the non-permissible values for y in terms of x , then
ii) simplify, where possible.
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Topic Notes
A rational expression is a fraction that its numerator and/or denominator are polynomials. In this lesson, we will first learn how to find the non-permissible values of the variable in a rational expression. Then, we will how to simplify rational expressions.
⋅ multiplication rule: xa⋅xb=xa+b
⋅ division rule: xbxa=xa−b
⋅ division rule: xbxa=xa−b
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