GCSE Maths Practice: substitution

Question 1 of 10

This question practices substitution in algebraic expressions. It is essential to square numbers correctly and combine terms.

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

Choose one option:

Calculate each square separately, then add them. Check your sum carefully.

Remember, squaring a number gives its product with itself. Follow BIDMAS carefully when combining the results.