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

What is the square root of 0.25?

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What is the sum of all even numbers between 1 and 50?

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If a number is divisible by 9, it is also divisible by which of the following?

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What is the square root of 121?

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If x^2 - 5x + 6 = 0, what are the roots?

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If sin(θ) = 0.6 and θ is acute, what is cos(θ)?

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If 3x = 81, what is the value of x?

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

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