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

What is the square root of 0.25?

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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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If a+b = 10 and ab = 21, what is the value of a^3 + b^3?

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A man spends 75% of his income and saves Rs. 600. What is his total income?

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What is the cube of 4?

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A rectangle has an area of 48 cm² and a length of 8 cm. What is its width?

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If a cylinder has a radius of 7 cm and height of 10 cm, what is its volume?

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What is the sum of all angles in a hexagon?

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The LCM of two numbers is 60, and their HCF is 5. If one of the numbers is 20, what is the other number?

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If the sum of the angles of a polygon is 1080°, how many sides does the polygon have?

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