GCSE Maths Practice: factorising-expressions

Question 3 of 10

Factorise a quadratic using GCF and difference of squares.

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\( \text{Factorise completely: } 5x^2 - 20 \)

Choose one option:

\( 5(x - 2)(x + 2) \) \( 5(x^2 - 4) \) \( (5x - 10)(x + 2) \) \( 5(x - 20)(x + 1) \)

Check by expanding the factors to verify the result.

Use the difference of squares identity after factoring out constants.