Topic Details (Notes format)

How to Solve Quadratic Equations by Factoring

Subject: Mathematics

Book: Maths Mastery

Factoring is a more intuitive method for solving ax² + bx + c = 0 when the polynomial can be expressed as a product of two binomials. For instance, x² + 5x + 6 factors to (x + 2)(x + 3) = 0, giving solutions x = –2 or x = –3. The approach requires identifying two numbers that multiply to ac and add to b. While factoring is not always possible with neat integers, it’s efficient when applicable. This method is widely used in geometry, business break-even analyses, and logic puzzles. Practicing with different coefficients develops a keen sense for pattern recognition and polynomials.

Practice Questions

If log(100) = 2 and log(10) = 1, what is log(1000)?

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What is the square root of 144?

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The sum of the squares of two consecutive integers is 145. What are the integers?

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If the sum of the squares of two consecutive positive integers is 365, what are the integers?

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What is the sum of the interior angles of a hexagon?

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

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The ratio of two numbers is 3:5, and their sum is 64. What are the numbers?

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

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If a cone has a base radius of 3 cm and height of 4 cm, what is its slant height?

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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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