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A rational expression is undefined when its [ ] equals zero. Algebraic cancellation is valid only for common factors.
A
A rational expression is improper when the numerator's degree is greater than or equal to the denominator's degree. Polynomial division rewrites it as a polynomial plus a proper rational expression.
B
x≠2,−3x\neq2,-3x=2,−3.
C
There are no common factors.
D
A rational expression is undefined when its denominator equals zero. Algebraic cancellation is valid only for common factors.
Card 1 of 23
1.2.18 Simplify rational expressions (A-level only) Flashcards
23 flashcards on OCR (MEI) A Level Maths 1.2.18 Simplify rational expressions (A-level only): the key formulae, methods and definitions you need to recall for Component 01, Component 02 and Component 03.