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

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

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If sin(A) = 3/5 and cos(B) = 5/13, where A and B are acute angles, what is sin(A+B)?

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

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What is the HCF of 72 and 120?

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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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What is the sum of all even numbers between 1 and 100?

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If the product of two numbers is 120 and their sum is 26, what are the numbers?

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If the perimeter of a square is 40 cm, what is the area of the square?

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If a = 2 and b = 3, what is the value of (a^2 + b^2)?

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