GCSE Maths Practice: substitution

Question 4 of 10

This question focuses on substitution with multiple operations including squares and products. It helps you practice BIDMAS with negative numbers.

‹ ›

\( \text{Evaluate } 2x^2 - 3yz + z^2 \text{ when } x = 1, y = -2, z = -3 \)

Select all correct options:

Calculate each part separately before combining. Remember (-2)(-3) = 6, but with minus sign in formula.

Compute squares and multiplications carefully. Pay attention to the order of operations and negative signs.