Topic Details (Notes format)

How to Identify and Use Perfect Cubes

Subject: Mathematics

Book: Maths Mastery

A perfect cube is an integer that is the cube of another integer, such as 27 = 3³ or 64 = 4³. Spotting these efficiently helps with factoring polynomials (like x³ – 8) or simplifying cube roots. Perfect cubes appear in 3D volume calculations, for instance, a 5×5×5 cube has a volume of 125. Understanding these patterns (1, 8, 27, 64, 125, ...) can streamline computations and deepen your exploration of algebraic identities like a³ ± b³. Whether comparing volumes or factoring expressions, perfect cubes are a potent tool in advanced math and practical tasks.

Practice Questions

What is the greatest common divisor (GCD) of 36 and 48?

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A sum of money doubles itself in 5 years at simple interest. What is the rate of interest?

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If x^2 - 6x + 9 = 0, what is the value of x?

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If two complementary angles differ by 30°, what are the angles?

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What is the value of x if 3x + 7 = 16?

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The angles of a quadrilateral are in the ratio 3:4:5:6. What is the largest angle?

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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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What is the sum of the first 50 positive integers?

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

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The probability of rolling a sum of 7 with two dice is:

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