GCSE Maths Practice: substitution

Question 10 of 10

This question practices substitution into a fractional algebraic expression that may result in a negative value.

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\( \text{Find the value of } \frac{2a^2 - b^2}{ab} \text{ when } a = 3,\ b = 6 \)

Choose one option:

Work out each part carefully. Check signs and simplify step by step to avoid errors.

Compute numerator and denominator separately, then divide. Pay attention to negative signs in the calculation.