CAIE IGCSE Mathematics Core C2.4.2 Understand and Use the Rules of Indices Questions

Practise Core CAIE IGCSE Mathematics by applying index laws to products, quotients and powers, including equations with a missing exponent.

Exam points

Add exponents when multiplying like bases and subtract exponents when dividing them, simplifying numerical and algebraic terms.
Multiply exponents for a power raised to a power and apply the power to every factor inside a bracket.
Rewrite both sides with a common base and equate exponents to solve for a missing index.

[Maximum number: 1]

$\frac{7^{15}}{7^x}=7^9$
Find the value of x.
x=

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