Algebraic Fractions
Muhtasari
An algebraic fraction is just a fraction with letters in it, and the same rules you already know for ordinary fractions still apply. The art is in factorising the top and bottom so that common factors can be cancelled, turning a heavy-looking expression into something clean and simple.
In this lesson you will simplify algebraic fractions by cancelling common factors, then move to the Extended skills of adding, subtracting, multiplying and dividing them, and of factorising and simplifying rational expressions. These techniques are the workhorses behind solving equations and rearranging formulas later in the course.
Malengo
- 1 Simplify algebraic fractions.
- Manipulate algebraic fractions. (Extended only)
- Factorise and simplify rational expressions. (Extended only)
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Tathmini ya Somo
Hongera kwa kukamilisha somo la Algebraic Fractions. Sasa kwa kuwa umechunguza dhana na mawazo muhimu, ni wakati wa kuweka ujuzi wako kwa mtihani. Sehemu hii inatoa mazoezi mbalimbali maswali yaliyoundwa ili kuimarisha uelewaji wako na kukusaidia kupima ufahamu wako wa nyenzo.
Utakutana na mchanganyiko wa aina mbalimbali za maswali, ikiwemo maswali ya kuchagua jibu sahihi, maswali ya majibu mafupi, na maswali ya insha. Kila swali limebuniwa kwa umakini ili kupima vipengele tofauti vya maarifa yako na ujuzi wa kufikiri kwa makini.
Tumia sehemu hii ya tathmini kama fursa ya kuimarisha uelewa wako wa mada na kubaini maeneo yoyote ambapo unaweza kuhitaji kusoma zaidi. Usikatishwe tamaa na changamoto zozote utakazokutana nazo; badala yake, zitazame kama fursa za kukua na kuboresha.
- Simplify 6x^2 / 9x. A. 2x/3 B. 3x/2 C. 2/(3x) D. 6x/9 Answer: A
- Simplify (x^2 - 9) / (x^2 + 5x + 6). A. (x-3)/(x+2) B. (x+3)/(x+2) C. (x-3)/(x-2) D. x - 3 Answer: A
- Express 2/x + 3/(x+1) as a single fraction. A. 5/(2x+1) B. (5x+2)/(x(x+1)) C. 6/(x(x+1)) D. (5x-2)/(x(x+1)) Answer: B
- Simplify (x/4) divided by (x^2/8). A. x/2 B. 2/x C. x^3/32 D. 8/(4x) Answer: B
- Which of these may be cancelled in a fraction? A. An added term B. A subtracted term C. A common factor D. Any letter Answer: C
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