Question

Factorise:
6a6-21a4-12a2​

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

$(3 {a}^{4} - 12 {a}^{2} )(2 {a}^{2} + 1)$

Step-by-step explanation:

$6 {a}^{6} - 21 {a}^{4} - 12 {a}^{2} \\ \\ = 6 {a}^{6} + 3 {a}^{4} - 24 {a}^{4} - 12 {a}^{2} \\ \\ = 3 {a}^{4} (2 {a}^{2} + 1) - 12 {a}^{2} (2 {a}^{2} + 1) \\ \\ = (3 {a}^{4} - 12 {a}^{2} )(2 {a}^{2} + 1)$

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