Topic Details (Notes format)

How to Use the Binomial Theorem

Subject: Mathematics

Book: Maths Mastery

The Binomial Theorem expands expressions of the form (a + b)^n into a sum of terms involving binomial coefficients: (a + b)^n = Σ [C(n, k) × a^(n–k) × b^k], from k=0 to n. For example, (x + 2)^3 = x^3 + 3x^2(2) + 3x(2^2) + 2^3 = x^3 + 6x^2 + 12x + 8. This powerful tool streamlines expansions for higher-degree polynomials, used in probability distributions (like the binomial distribution), symbolic manipulation, and advanced algebraic problem-solving. Familiarity with binomial coefficients—C(n, k)—further connects to combinations, bridging algebra and combinatorics elegantly.

Practice Questions

If x^2 - 5x + 6 = 0, what are the roots?

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If the probability of an event is 1/4, what is the probability of its complement?

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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:b = 5:7 and b:c = 6:11, what is a:c?

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

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The LCM of 12 and 15 is:

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A cone has a base radius of 7 cm and height of 24 cm. What is its volume?

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

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

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