Topic Details (Notes format)

How to Factor the Difference of Squares

Subject: Mathematics

Book: Maths Mastery

A difference of squares takes the form a² – b² and factors into (a – b)(a + b). For example, x² – 9 becomes (x – 3)(x + 3). This factoring pattern simplifies advanced algebraic expressions, helps solve polynomial equations quickly, and appears often in geometry proofs or optimization tasks. Recognizing a² – b² is crucial in polynomial manipulation, partial fraction decomposition, and problem-solving across arithmetic, geometry, and calculus contexts, making it a powerful tool in your algebraic toolkit.

Practice Questions

If x:y = 4:5 and y:z = 2:3, what is x:z?

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What is the area of a circle with a diameter of 14 cm?

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If the length of a rectangle is doubled and the width is halved, what is the change in area?

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What is the area of an equilateral triangle with side length 10 cm?

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If a:b = 3:4 and b:c = 5:6, what is a:c?

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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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The sides of a triangle are 5 cm, 12 cm, and 13 cm. What type of triangle is it?

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If x - y = 5 and x + y = 15, what is the value of x?

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If x^3 - 3x^2 + 4 = 0, what is one root of the equation?

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What is the sum of all odd numbers from 1 to 99?

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