GCSE Maths Practice: simplifying-expressions

Question 1 of 11

Factorise completely by extracting the highest common factor.

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\( \begin{array}{l}\textbf{Factorise fully:} \\ -8a^5b^4 + 4a^4b^2 - 12a^3b\end{array} \)

Choose one option:

Always check signs when factoring out negative HCF.

HCF = -4a^3b; divide each term: -8a^5b^4/-4a^3b = 2a^2b^3 ...