Topic Details (Notes format)

How to Factor Algebraic Expressions (Common Factor)

Subject: Mathematics

Book: Maths Mastery

Factoring out the greatest common factor (GCF) is a fundamental technique to simplify expressions and solve equations. Suppose you have 6x² + 9x; the GCF is 3x. Factoring yields 3x(2x + 3). This step often precedes more complex factoring methods like grouping or the difference of squares. By extracting the GCF, you reduce expressions to simpler forms, streamline solutions, and clarify how individual terms relate. This skill is vital in advanced algebra, polynomial arithmetic, and a variety of real-life applications that demand systematic problem decomposition.

Practice Questions

If a:b = 7:9 and b:c = 5:6, what is a:c?

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If a person can type 45 words per minute, how many words can they type in 2 hours?

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If a = 5 and b = 12, what is the length of the hypotenuse of a right triangle?

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If x² - 9x + 18 = 0, what are the roots of the equation?

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

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What is the area of an equilateral triangle with side length 10 cm?

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The sides of a triangle are 7, 24, and 25. Is this a right triangle?

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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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What is the square root of 121?

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If a right triangle has legs of 9 cm and 12 cm, what is the length of the hypotenuse?

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