Chapter 2: Surds, indices and exponentials Notes

Sections

1. 2A Surds, binomial products and rationalising Mastered

   Rational and irrational numbers, simplifying and operating with surds, expanding binomial products with surds, conjugates, and rationalising the denominator.

   Open notes
2. 2B Fractional indices Mastered

   Fractional indices as roots and powers, evaluating expressions like 8^(2/3), and applying index laws with fractional and negative indices.

   Open notes
3. 2C Exponential equations Mastered

   Solving exponential equations by writing both sides with the same base, including fractional and negative solutions.

   Open notes
4. 2D Exponential growth and decay Mastered

   Exponential graphs y = a^x, growth and decay models A = A₀(1 ± r)^n, half-life and doubling, and using trial and error or graphs to find when a value is reached.

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