Topic Details (Notes format)

How to Work with Exponents (Laws of Exponents)

Subject: Mathematics

Book: Maths Mastery

Exponents, or powers, indicate repeated multiplication of a base number. Key laws include Product of Powers (a^m × a^n = a^(m+n)) and Power of a Power ((a^m)^n = a^(m×n)). For example, 2² × 2³ = 2^(2+3) = 2^5 = 32. Negative exponents a^–n represent 1/(a^n). Mastering exponents is vital in scientific notation, compound interest, and growth/decay problems. By consistently applying exponent laws, you can simplify expressions, solve exponential equations, and interpret phenomena like population growth or radioactive decay with ease.

Practice Questions

If 5x - 2 = 13, what is the value of x?

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

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What is the length of the diagonal of a square with a side length of 7 cm?

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A car covers a distance of 150 km in 2.5 hours. What is its average speed?

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

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What is the sum of the first 10 positive even numbers?

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How many diagonals does a pentagon have?

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If the ratio of two numbers is 3:5 and their HCF is 4, what are the numbers?

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The area of an equilateral triangle with side length 6 cm is:

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If a = 4 and b = 5, what is the value of (a+b)^2?

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