Topic Details (Notes format)

How to Reduce Algebraic Fractions with Polynomials

Subject: Mathematics

Book: Maths Mastery

To reduce or simplify algebraic fractions, factor both numerator and denominator completely, then cancel common factors, ensuring they are non-zero in the original domain. For example, (x²–1)/(x²–x–2) factors to (x–1)(x+1)/(x–2)(x+1). Cancel (x+1) for x≠–1, leaving (x–1)/(x–2). This process is identical to fraction simplification but extended to polynomials. Mastery enables you to handle advanced rational expressions in calculus integrals, partial fractions, and engineering equations that combine polynomial-based denominators and numerators for streamlined analysis.

Practice Questions

A sum triples in 20 years at simple interest. What is the rate of interest per annum?

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The perimeter of a rectangle is 50 cm, and its length is 15 cm. What is its width?

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If the average of five consecutive odd numbers is 25, what is the largest number?

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What is the square root of 0.25?

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What is the HCF of 72 and 120?

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If the angles of a triangle are in the ratio 2:3:4, what is the measure of the largest angle?

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If x + 1/x = 5, what is the value of x^2 + 1/x^2?

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What is the remainder when 5^100 is divided by 3?

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A train 120 meters long is moving at a speed of 54 km/h. How long will it take to pass a pole?

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If x + y = 10 and xy = 21, what is the value of x³ + y³?

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