GCSE Maths Practice: substitution

Question 10 of 10

This question practices substitution into expressions with cubes and squares.

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\( \text{Evaluate } x^3 - y^3 + z^2 \text{ when } x = 3, y = 2, z = 4 \)

Choose one option:

Cube and square the numbers first, then add and subtract carefully. Check your arithmetic.

Compute x^3, y^3, and z^2 separately, then combine the results following BIDMAS.