Question

Factorise
a⁴-8a²b²+18ab​

Answer 1

Answer:

Your answer

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Answer 2

Answer:

${\bf{\large{\tt{ FACTORISATION:}}}}$

${a}^{4} - 8 {a}^{2} {b}^{2} + 18ab \\ \\ = {a}^{4} - 3 {a}^{2} {b}^{2} - 6{a}^{2} {b}^{2} + 18ab \\ \\ = {a}^{2} ( {a}^{2} - 3 {b}^{2} ) - 6ab(ab - 3)$