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

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

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A man rows downstream at 6 km/h and upstream at 4 km/h. What is the speed of the stream?

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If the sum of three consecutive integers is 96, what are the integers?

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If a square has a perimeter of 64 cm, what is its area?

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If a:b = 2:3 and b:c = 4:5, what is a:c?

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The perimeter of a rectangle is 40 cm, and its length is 12 cm. What is its width?

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If the sum of three consecutive integers is 72, what are the integers?

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If the perimeter of a square is 36 cm, what is the length of its diagonal?

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If 8x = 512, what is the value of x?

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If x^2 + 4x + 4 = 0, what is the value of x?

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